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WebView makes website content unaccessible on the top/bottom edges
I'm being faced with an issue when using SwiftUI's WebView on iOS 26. In many websites, the top/bottom content is unaccessible due to being under the app's toolbars. It feels like the WebView doesn't really understand the safe areas where it's being shown, because the content should start right below the navigation bar, and only when the user scrolls down, the content should move under the bar (but it's always reachable if the users scroll back up). Here's a demo of the issue: Here's a 'fix' by ensuring that the content of the WebView never leaves its bounds. But as you can see, it feels out of place on iOS 26 (would be fine on previous OS versions if you had a fully opaque toolbar): Code: struct ContentView: View { var body: some View { NavigationStack { WebView(url: URL(string: "https://apple.com")).toolbar { ToolbarItem(placement: .primaryAction) { Button("Top content covered, unaccessible.") {} } } } } } Does anyone know if there's a way to fix it using some sort of view modifier combination or it's just broken as-is?
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644
Dec ’25
Request Review alert is unresponsive in iOS 26.1
Try this simple code: import SwiftUI import StoreKit struct ReviewView: View { @Environment(\.requestReview) var requestReview var body: some View { Button("Leave a review") { requestReview() } } } When the Review Alert shows, the "Not Now" button is disabled for some reason!? It was always tappable in all iOS versions that I remember. And there is no way to opt out, unless the user taps on the stars first. Is it a bug or a feature? Thanks for looking into it!
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1.3k
Dec ’25
dropDestination does not work inside List
I've discovered an issue with using iOS 16's Transferable drag-and-drop APIs for SwiftUI. The dropDestination modifier does not work when applied to a subview of a List. This code below will not work, unless you replace the List with a VStack or any other container (which, of course, removes all list-specific rendering). The draggable modifier will still work and the item will drag, but the dropDestination view won't react to it and neither closure will be called. struct MyView: View { var body: some View { List { Section { Text("drag this title") .font(.largeTitle) .draggable("a title") } Section { Color.pink .frame(width: 400, height: 400) .dropDestination(for: String.self) { receivedTitles, location in true } isTargeted: { print($0) } } } } } Has anyone encountered this bug and perhaps found a workaround?
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3.8k
Feb ’26
iOS 26 beta: UIResponder inputAccessoryView no longer integrates seamlessly with system keyboard
Prior to iOS 26, it was possible to design an inputAccessoryView(Controller) that would integrate seamlessly with the system keyboard, by which I mean appearing as a natural extension of the system keyboard. For example, using CYRKeyboardButton https://github.com/tmcintos/CYRKeyboardButton. To date, I have successfully used this to provide an enhanced numeric key row within my apps, which is a distinguishing feature of these apps. It took a lot of engineering and testing effort to perfect this design. However, with iOS 26 the design is completely broken due to the system keyboard UI change, which makes it impossible to display an inputAccessoryView seamlessly along the top of the system keyboard (see attached screenshots). In my opinion, it is just plain reckless for Apple to make these kinds of trivial UI changes, which break existing app designs without adding any significant value to the user experience. iOS ≤ 18.x: iOS 26 beta:
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423
Jun ’25
iOS 26 beta - Crash using QLPreviewController (QuickLook) in simulator.
Using the iOS 26 beta simulator, I am experiencing a crash using the QLPreviewController. This is easily reproduced using a small sample app and a sample excel file in the bundle. It does work in prior Xcode 16.4 and simulators (18.5). I didn't find any mention of this in Xcode 26 or iOS 26 release notes but I could have missed something. I don't have a spare device to update to iOS 26 and try on a real device so it may just be a simulator issue? Any feedback would be helpful. Thanks. Error: QuickLook/QLHostRemoteViewModel.swift:37: Fatal error: No extensions could be found matching '_AppExtensionQuery(extensionPointIdentifier: "com.apple.quicklook.UIExtensionPoint", predicate: nil, hostAuditToken: nil, extensionPoint: nil, allowsDuplicates: true)' Sample view controller... import UIKit import QuickLook class ViewController: UIViewController, QLPreviewControllerDataSource { var excelFileURL: URL! override func viewDidLoad() { super.viewDidLoad() // Load the Excel file (example: from bundle) if let url = Bundle.main.url(forResource: "file_example_XLSX_100", withExtension: "xlsx") { excelFileURL = url presentPreviewController() } } func presentPreviewController() { let previewController = QLPreviewController() previewController.dataSource = self present(previewController, animated: true, completion: nil) } // MARK: - QLPreviewControllerDataSource func numberOfPreviewItems(in controller: QLPreviewController) -> Int { return 1 } func previewController(_ controller: QLPreviewController, previewItemAt index: Int) -> QLPreviewItem { return excelFileURL as QLPreviewItem } }
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636
Jun ’25
Is this log noise? "CoreSVG: Error: NULL ref passed to getObjectCoreSVG: Error: NULL ref passed to getObject"
Before I waste time creating an Apple Developer Support ticket, I’m hoping an Apple DTS engineer can confirm if this is just log noise. Here’s the code: import SwiftUI struct ContentView: View { @State private var editMode: EditMode = .inactive @State private var items = ["Item 1", "Item 2", "Item 3"] var body: some View { NavigationStack { List { ForEach(items, id: \.self) { item in Text(item) } .onDelete { indexSet in items.remove(atOffsets: indexSet) } } .environment(\.editMode, $editMode) .toolbar { ToolbarItem(placement: .topBarTrailing) { EditButton() .environment(\.editMode, $editMode) } } } } } #Preview { ContentView() } When you run this code and tap Edit, you’ll initially get: CoreSVG has logged an error. Set environment variabe [sic] "CORESVG_VERBOSE" to learn more. After setting CORESVG_VERBOSE = YES, you’ll see: CoreSVG: Error: NULL ref passed to getObjectCoreSVG: Error: NULL ref passed to getObject This error only appears the first time Edit is tapped after a build and run. It won't happen again, even after force-quitting and reopening the app. The issue also only happens on iOS 18.0 and 18.1—I can’t reproduce it on iOS 17.5. Fortunately, it doesn’t seem to cause any negative side effects. Is this just log noise?
Topic: UI Frameworks SubTopic: SwiftUI
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1.7k
Apr ’25
Exception unarchiving UIToolbar in iOS 18.5 simulator with Xcode 26 beta 2
I'm running into a persistent problem with the iOS 18.5 simulator in Xcode 26 beta 2. I have built a very simple test app with a storyboard that includes only a toolbar added to the ViewController scene in the storyboard. The test app runs fine in iOS 26 simulators.When I try to run it in the iOS 18.5 simulator for iPhone Pro or iPad (16), it fails while unarchiving the storyboard (as far as I can tell) with this error message in the Xcode console: *** Terminating app due to uncaught exception 'NSInvalidUnarchiveOperationException', reason: 'Could not instantiate class named TtGC5UIKit17UICoreHostingViewVCS_21ToolbarVisualProvider8RootView because no class named TtGC5UIKit17UICoreHostingViewVCS_21ToolbarVisualProvider8RootView was found; the class needs to be defined in source code or linked in from a library (ensure the class is part of the correct target)' terminating due to uncaught exception of type NSException CoreSimulator 1043 - Device: iPad (A16) (3E70E25F-8434-4541-960D-1B58EB4037F3) - Runtime: iOS 18.5 (22F77) - DeviceType: iPad (A16) I'd love a simple workaround for this.
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417
Aug ’25
NavigationStack back button ignores tint when presented in sheet
[Also submitted as FB21536505] When presenting a NavigationStack inside a .sheet, applying .tint(Color) does not affect the system back button on pushed destinations. The sheet’s close button adopts the tint, but the back chevron remains the default system color. REPRO Create a new iOS project and replace ContentView.swift with the code below. —or— Present a .sheet containing a NavigationStack. Apply .tint(.red) to the NavigationStack or sheet content. Push a destination using NavigationLink. EXPECTED The back button chevron adopts the provided tint color, consistent with other toolbar buttons and UIKit navigation behavior. ACTUAL The back button chevron remains the default system color. NOTES Reproduces consistently on: iOS 26.2 (23C54) iOS 26.3 (23D5089e) SCREEN RECORDING SAMPLE CODE import SwiftUI struct ContentView: View { @State private var isSheetPresented = false var body: some View { Button("Open Settings Sheet") { isSheetPresented = true } .sheet(isPresented: $isSheetPresented) { NavigationStack { List { NavigationLink("Push Detail") { DetailView() } } .navigationTitle("Settings") .navigationBarTitleDisplayMode(.inline) .toolbar { ToolbarItem(placement: .automatic) { Button("Close", systemImage: "xmark") { isSheetPresented = false } } } } .tint(.red) } } } private struct DetailView: View { var body: some View { List { Text("Detail View") } .navigationTitle("Detail") .navigationBarTitleDisplayMode(.inline) } }
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164
Jan ’26
SwiftUI iOS 26 .safeAreaBar issue with large navigation title
I have some really straight forward code in a sample project. For some reason when the app launches the title is blurred obscured by scrolledgeeffect blur. If I scroll down the title goes small as it should do and all looks fine. If I scroll back to the top, just before it reaches the top the title goes large and it looks correct, but once it actually reaches/snaps to the top, is then incorrectly blurs again. Is there anything obvious I'm doing wrong? Is this a bug? struct ContentView: View { var body: some View { NavigationStack { ScrollView { VStack { Rectangle().fill(Color.red.opacity(0.2)).frame(height: 200) Rectangle().frame(height: 200) Rectangle().frame(height: 200) Rectangle().frame(height: 200) Rectangle().frame(height: 200) } } .safeAreaBar(edge: .top) { Text("Test") } .navigationTitle(Title") } } }
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581
Jan ’26
CoreText' CTRunDraw can't draw underline attribute in iOS18 with Xcode 16 beta
demo code : - (void)drawRect:(CGRect)rect { CGContextRef context = UIGraphicsGetCurrentContext(); // Flip the coordinate system CGContextSetTextMatrix(context, CGAffineTransformIdentity); CGContextTranslateCTM(context, 0, self.bounds.size.height); CGContextScaleCTM(context, 1.0, -1.0); NSDictionary *attrs = @{NSFontAttributeName: [UIFont systemFontOfSize:20], NSForegroundColorAttributeName: [UIColor blueColor], NSUnderlineStyleAttributeName: @(NSUnderlineStyleThick), }; // Make an attributed string NSAttributedString *attributedString = [[NSAttributedString alloc] initWithString:@"Hello CoreText!" attributes:attrs]; CFAttributedStringRef attributedStringRef = (__bridge CFAttributedStringRef)attributedString; // Simple CoreText with CTFrameDraw CTFramesetterRef framesetter = CTFramesetterCreateWithAttributedString(attributedStringRef); CGPathRef path = CGPathCreateWithRect(self.bounds,NULL); CTFrameRef frame = CTFramesetterCreateFrame(framesetter,CFRangeMake(0, 0),path,NULL); //CTFrameDraw(frame, context); // You can comment the line 'CTFrameDraw' and use the following lines // draw with CTLineDraw CFArrayRef lines = CTFrameGetLines(frame); CGPoint lineOrigins[CFArrayGetCount(lines)]; CTFrameGetLineOrigins(frame, CFRangeMake(0, 0), lineOrigins); for (int i = 0; i < CFArrayGetCount(lines); i++) { CTLineRef line = CFArrayGetValueAtIndex(lines, i); CGContextSetTextPosition(context, lineOrigins[i].x, lineOrigins[i].y); // CTLineDraw(line, context); // You can comment the line 'CTLineDraw' and use the following lines // draw with CTRunDraw // use CTRunDraw will lost some attributes like NSUnderlineStyleAttributeName, // so you need draw it by yourself CFArrayRef runs = CTLineGetGlyphRuns(line); for (int j = 0; j < CFArrayGetCount(runs); j++) { CTRunRef run = CFArrayGetValueAtIndex(runs, j); CTRunDraw(run, context, CFRangeMake(0, 0)); } } } this code will use CTRunDraw to draw the content , and the underline will draw and show normally in iOS17 & Xcode 15 , But when you build it with XCode16 & iOS18 beta . the underline will be missing .
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762
Apr ’25
tabViewBottomAccessory inline functionality missing?
Summary As presented in the SwiftUI WWDC video, the new tabViewBottomAccessory should allow for unique contents for .inline. This is what was presented as being used for the Apple Music miniplayer. However, the functionality seems to be either missing or unintuitive. As seen in the photos attached, not only does .inline functionality not seem to do anything, but the inline accessory also has misaligned elements that cannot be fixed by conditionally modifying the contents. Build Target iOS 26.0 Details This problem recurs on physical devices, simulators, and Xcode previews. Here is a view I've constructed for use as a tabViewBottomAccessory: struct FitnessToolbarAccessory: View { @Environment(\.tabViewBottomAccessoryPlacement) var placement var body: some View { if (placement == .inline) { Text("hello") } else { HStack { HStack { Image(systemName: "dumbbell.fill") VStack(alignment: .leading) { Text("Active Workout") Text("Push Day - Chest") .font(.system(size: 13)) } Spacer() Image(systemName: "pause.fill") } .padding() } } } } Here is the result, working as expected in expanded mode: And here is the result in inline mode after minimizing the tabViewBottomAccessory: The content of this inline accessory is clearly incorrect, as it was specified to contain a Text view containing "hello". Additionally, the contents seem to have some incorrect alignment. This occurs regardless of the contents of the accessory, even plain text.
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216
Sep ’25
Navigation Bar shows top gap in landscape on iOS 26 beta when background color is set
Hi, I'm seeing an issue in iOS 26 beta related to UINavigationBar rendering in landscape. When a background color is set for the navigation bar and the device is rotated to landscape, an unexpected gap appears above the navigation bar. This also happens in the official sample project provided in Apple’s documentation: https://developer.apple.com/documentation/uikit/customizing-your-app-s-navigation-bar Is this a bug in the beta, or is there a workaround to avoid this behavior? Thanks in advance!
Topic: UI Frameworks SubTopic: UIKit Tags:
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427
Jul ’25
iPadOS 26 - Status bar overlaps with navigation bar
Hello, I'm experiencing a navigation bar positioning issue with my UIKit iPad app on iPadOS 26 (23A340) using Xcode 26 (17A321). The navigation bar positions under the status bar initially, and after orientation changes to landscape, it positions incorrectly below its expected location. This occurs on both real device (iPad mini A17 Pro) and simulator. My app uses UIKit + Storyboard with a Root Navigation Controller. A stack overflow post has reproduce the bug event if it's not in the same configuration: https://stackoverflow.com/questions/79752945/xcode-26-beta-6-ipados-26-statusbar-overlaps-with-navigationbar-after-presen I have checked all safe areas and tried changing some constraints, but nothing works. Have you encountered this bug before, or do you need additional information to investigate this issue?
7
1
984
Nov ’25
List Section with Swipe Action - glitches
Overview I have an iOS project where I have a list with sections. Each cell in the section can be swiped to have some action What needs to be done When swipe button is pressed the cell needs to move from one section to the other without a UI glitch. Problem When I press the swipe action button, there is a UI glitch and some warnings are thrown. UICollectionView internal inconsistency: unexpected removal of the current swipe occurrence's mask view. Please file a bug against UICollectionView. Reusable view: <SwiftUI.ListCollectionViewCell: 0x10700c200; baseClass = UICollectionViewListCell; frame = (16 40.3333; 370 52); hidden = YES; layer = <CALayer: 0x600000c12fa0>>; Collection view: <SwiftUI.UpdateCoalescingCollectionView: 0x106820800; baseClass = UICollectionView; frame = (0 0; 402 874); clipsToBounds = YES; autoresize = W+H; gestureRecognizers = <NSArray: 0x600000c13330>; backgroundColor = <UIDynamicSystemColor: 0x60000173a9c0; name = systemGroupedBackgroundColor>; layer = <CALayer: 0x600000c3a070>; contentOffset: {0, -62}; contentSize: {402, 229}; adjustedContentInset: {62, 0, 34, 0}; layout: <UICollectionViewCompositionalLayout: 0x10590edb0>; dataSource: <_TtGC7SwiftUI31UICollectionViewListCoordinatorGVS_28CollectionViewListDataSourceOs5Never_GOS_19SelectionManagerBoxS2___: 0x106822a00>>; Swipe occurrence: <UISwipeOccurrence: 0x103c161f0; indexPath: <NSIndexPath: 0xab1f048608f3828b> {length = 2, path = 0 - 0}, state: .triggered, direction: left, offset: 0> Test environment: Xcode 26.0.1 (17A400) iOS 26 Simulator (iPhone 17 Pro) Feedback filed: FB20890361 Code I have pasted below the minimum reproducible code ContentView import SwiftUI struct ContentView: View { @State private var dataStore = DataStore() var body: some View { List { ToDoSection(status: .notStarted, toDos: notStartedToDos) ToDoSection(status: .inProgress, toDos: inProgressToDos) ToDoSection(status: .completed, toDos: completedTodos) } } var notStartedToDos: [Binding<ToDoItem>] { $dataStore.todos.filter { $0.wrappedValue.status == .notStarted } } var inProgressToDos: [Binding<ToDoItem>] { $dataStore.todos.filter { $0.wrappedValue.status == .inProgress } } var completedTodos: [Binding<ToDoItem>] { $dataStore.todos.filter { $0.wrappedValue.status == .completed } } } ToDoSection import SwiftUI struct ToDoSection: View { let status: ToDoItem.Status let toDos: [Binding<ToDoItem>] var body: some View { if !toDos.isEmpty { Section(status.title) { ForEach(toDos) { toDo in Text(toDo.wrappedValue.title) .swipeActions(edge: .trailing) { if status == .notStarted { Button("Start") { toDo.wrappedValue.status = .inProgress } } if status != .completed { Button("Complete") { toDo.wrappedValue.status = .completed } Button("Move back") { toDo.wrappedValue.status = .notStarted } } } } } } } } ToDoItem import Foundation struct ToDoItem: Identifiable { let id: UUID let title: String var status: Status } extension ToDoItem { enum Status: Equatable { case notStarted case inProgress case completed var title: String { switch self { case .notStarted: "Not Started" case .inProgress: "In Progress" case .completed: "Completed" } } } } DataStore import Foundation @Observable class DataStore { var todos: [ToDoItem] init() { todos = [ ToDoItem(id: UUID(), title: "aaa", status: .notStarted), ToDoItem(id: UUID(), title: "bbb", status: .notStarted), ToDoItem(id: UUID(), title: "ccc", status: .notStarted) ] } }
Topic: UI Frameworks SubTopic: SwiftUI
4
1
287
Nov ’25
Layout Engine Crash on iOS 26: NSInternalInconsistencyException
Starting with iOS 26 beta, I'm encountering an intermittent crash in production builds related to Auto Layout and background threading. This crash did not occur on iOS 18 or earlier and has become reproducible only on devices running iOS 26 betas. We have already performed a thorough audit of our code: • Verified that all UIKit view hierarchy and layout mutations occur on the main thread. • Re-tested with strict logging—confirmed all remaining layout/constraint/view updates are performed on the main thread. • No third-party UI SDKs are used in the relevant flow. Despite that, the crash still occurs and always from a background thread, during internal UIKit layout commits. Fatal Exception: NSInternalInconsistencyException Modifications to the layout engine must not be performed from a background thread after it has been accessed from the main thread. 0 MyApp 0x7adbc8 FIRCLSProcessRecordAllThreads + 172 1 MyApp 0x7adfd4 FIRCLSProcessRecordAllThreads + 1208 2 MyApp 0x7bc4b4 FIRCLSHandler + 56 3 MyApp 0x7bc25c __FIRCLSExceptionRecord_block_invoke + 100 4 libdispatch.dylib 0x1b7cc _dispatch_client_callout + 16 5 libdispatch.dylib 0x118a0 _dispatch_lane_barrier_sync_invoke_and_complete + 56 6 MyApp 0x7bb1f0 FIRCLSExceptionRecord + 224 7 MyApp 0x7bbd1c FIRCLSExceptionRecordNSException + 456 8 MyApp 0x7badf4 FIRCLSTerminateHandler() + 396 9 Intercom 0x86684 IntercomSDK_sentrycrashcm_cppexception_getAPI + 308 10 libc++abi.dylib 0x11bdc std::__terminate(void (*)()) + 16 11 libc++abi.dylib 0x15314 __cxa_get_exception_ptr + 86 12 libc++abi.dylib 0x152bc __cxxabiv1::failed_throw(__cxxabiv1::__cxa_exception*) + 90 13 libobjc.A.dylib 0x3190c objc_exception_throw + 448 14 CoreAutoLayout 0x13a4 -[NSISEngine optimize] + 314 15 CoreAutoLayout 0x1734 -[NSISEngine _optimizeWithoutRebuilding] + 72 16 CoreAutoLayout 0x1404 -[NSISEngine optimize] + 96 17 CoreAutoLayout 0xee8 -[NSISEngine performPendingChangeNotifications] + 104 18 UIKitCore 0x27ac8 -[UIView(Hierarchy) layoutSubviews] + 136 19 UIKitCore 0xfe760 -[UIWindow layoutSubviews] + 68 20 UIKitCore 0x234228 -[UITextEffectsWindow layoutSubviews] + 44 21 UIKitCore 0x27674 -[UIImageView animationImages] + 912 22 UIKitCore 0x28134 -[UIView(Internal) _viewControllerToNotifyOnLayoutSubviews] + 40 23 UIKitCore 0x18c2898 -[UIView(CALayerDelegate) layoutSublayersOfLayer:] + 2532 24 QuartzCore 0xabd98 CA::Layer::perform_update_(CA::Layer*, CALayer*, unsigned int, CA::Transaction*) + 116 25 QuartzCore 0x8e810 CA::Layer::update_if_needed(CA::Transaction*, unsigned int, unsigned int) + 600 26 QuartzCore 0xad45c CA::Layer::layout_and_display_if_needed(CA::Transaction*) + 200 27 QuartzCore 0x6e30c CA::Context::commit_transaction(CA::Transaction*, double, double*) + 540 28 QuartzCore 0x9afc4 CA::Transaction::commit() + 644 29 QuartzCore 0x16974c CA::Transaction::release_thread(void*) + 180 30 libsystem_pthread.dylib 0x4c28 _pthread_tsd_cleanup + 620 31 libsystem_pthread.dylib 0x4998 _pthread_exit + 84 32 libsystem_pthread.dylib 0x5e3c pthread_atfork + 54 33 libsystem_pthread.dylib 0x1440 _pthread_wqthread + 428 34 libsystem_pthread.dylib 0x8c0 start_wqthread + 8 Any ideas?
4
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748
Jul ’25
iOS 26 Beta 3 `safeAreaInsets`
I noticed that trying to access safeAreaInsets from the active window causes an infinite run loop. This issue appeared after updating to Beta 3. Here’s an example of the code: extension UIDevice { var safeAreaInsets: UIEdgeInsets { guard let windowScene = UIApplication.shared.connectedScenes.first as? UIWindowScene, let window = windowScene.windows.first(where: { $0.isKeyWindow }) else { return .zero } return window.safeAreaInsets } } The return doesn’t happen because it ends up in some kind of recursion.
5
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662
Jul ’25
PHPickerViewController unusable via Mac Catalyst on macOS 26 when interface is "Scaled to Match iPad"
There is a serious usability issue with PHPickerViewController in a UIKit app running on macOS 26 via Mac Catalyst when the Mac Catalyst interface is set to “Scaled to Match iPad”. Mouse click and other pointer interactions do not take place in the correct position. This means you have to click in the wrong position to select a photo and to close the picker. This basically makes it unusable. To demonstrate, use Xcode 26 on macOS 26 to create a new iOS app project based on Swift/Storyboard. Then update ViewController.swift with the following code: import UIKit import PhotosUI class ViewController: UIViewController { override func viewDidLoad() { super.viewDidLoad() var cfg = UIButton.Configuration.plain() cfg.title = "Photo Picker" let button = UIButton(configuration: cfg, primaryAction: UIAction(handler: { _ in self.showPicker() })) button.translatesAutoresizingMaskIntoConstraints = false view.addSubview(button) NSLayoutConstraint.activate([ button.centerXAnchor.constraint(equalTo: view.safeAreaLayoutGuide.centerXAnchor), button.centerYAnchor.constraint(equalTo: view.safeAreaLayoutGuide.centerYAnchor), ]) } private func showPicker() { var config = PHPickerConfiguration() config.selectionLimit = 10 config.selection = .ordered let vc = PHPickerViewController(configuration: config) vc.delegate = self self.present(vc, animated: true) } } extension ViewController: PHPickerViewControllerDelegate { func picker(_ picker: PHPickerViewController, didFinishPicking results: [PHPickerResult]) { print("Picked \(results.count) photos") dismiss(animated: true) } } Then go to the "Supported Destinations" section of the project target. Add a "Mac (Mac Catalyst)" destination. Then under the "Deployment Information" section, make sure the "Mac Catalyst Interface" setting is "Scaled to Match iPad". Then build and run the app on a Mac (using the Mac Catalyst destination) with macOS 26.0.1. Make sure the Mac has a dozen or so pictures in the Photo Library to fully demonstrate the issue. When the app is run, a simple screen appears with one button in the middle. Click the button to bring up the PHPickerViewController. Now try to interact with the picker interface. Note that all pointer interactions are in the wrong place on the screen. This makes it nearly impossible to choose the correct photos and close the picker. Quit the app. Select the project and go to the General tab. In the "Deployment Info" change the “Mac Catalyst Interface” setting to “Optimize for Mac” and run the app again. Now the photo picker works just fine. If you run the app on a Mac running macOS 15 then the photo picker works just fine with either “Mac Catalyst Interface” setting. The problem only happens under macOS 26.0 (I do not have macOS 26.1 beta to test) when the “Mac Catalyst Interface” setting is set to “Scaled to Match iPad”. This is critical for my app. I cannot use “Optimize for Mac”. There are far too many issues with that setting (I use UIStepper and UIPickerView to start). So it is critical to the usability of my app under macOS 26 that this issue be resolved. It is expected that PHPickerViewController responds correctly to pointer events on macOS 26 when running a Mac Catalyst app set to “Scaled to Match iPad”. A version of this has been filed as FB20503207
12
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749
Oct ’25
Fix text in accessory view
Do you guys know how to fix the render of the text in the accessory view ? If I force the color of text to be .black it work but it will break dark mode, but forcing it .black : .white on color scheme changes makes white to still adapt to what is behind it I have noticed that Apple Music doesn’t have that artifact and it seems to break when images are behind the accessory view // MARK: - Next Routine Accessory @available(iOS 26.0, *) struct NetxRoutinesAccessory: View { @ObservedObject private var viewModel = RoutineProgressViewModel.shared @EnvironmentObject var colorSchemeManager: ColorSchemeManager @EnvironmentObject var routineStore: RoutineStore @EnvironmentObject var freemiumKit: FreemiumKit @ObservedObject var petsStore = PetsStore.shared @Environment(\.colorScheme) private var colorScheme // Tab accessory placement environment @Environment(\.tabViewBottomAccessoryPlacement) private var accessoryPlacement // Navigation callback var onTap: (() -> Void)? @State private var isButtonPressed = false /// Explicit black for light mode, white for dark mode private var textColor: Color { colorScheme == .dark ? .trueWhite : .trueBlack } /// Returns true when the accessory is in inline/minimized mode private var isInline: Bool { accessoryPlacement == .inline } var body: some View { accessoryContent() .onTapGesture { onTap?() } } private func accessoryContent() -> some View { HStack(spacing: 12) { // Content with smooth transitions VStack(alignment: .leading, spacing: 2) { if viewModel.totalTasks == 0 { Text(NSLocalizedString("Set up routines", comment: "Routines empty state")) .font(.subheadline.weight(.medium)) .foregroundColor(textColor) } else if let next = viewModel.nextRoutineTask() { HStack(spacing: 4) { Text(NSLocalizedString("Next", comment: "Next routine prefix")) .font(.caption) .foregroundColor(textColor) Text("•") .font(.caption) .foregroundColor(textColor) Text(next.routine.name) .font(.subheadline.weight(.medium)) .foregroundColor(textColor) .lineLimit(1) } .id("routine-\(next.routine.id)-\(next.time)") .transition(.opacity.combined(with: .move(edge: .leading))) HStack(spacing: 4) { Text(viewModel.petNames(for: next.routine.petIDs)) .font(.caption) .foregroundColor(textColor) Text("•") .font(.caption) .foregroundColor(textColor) Text(Routine.displayTimeFormatter.string(from: next.time)) .font(.caption.weight(.medium)) .foregroundColor(colorSchemeManager.accentColor ?? .blue) } .id("time-\(next.routine.id)-\(next.time)") .transition(.opacity.combined(with: .move(edge: .leading))) } else { // All tasks completed Text(NSLocalizedString("All done for today!", comment: "All routines completed")) .font(.subheadline.weight(.medium)) .foregroundColor(textColor) .transition(.opacity.combined(with: .scale)) Text("\(viewModel.completedTasks)/\(viewModel.totalTasks) " + NSLocalizedString("tasks", comment: "Tasks count suffix")) .font(.caption) .foregroundColor(textColor) } } .animation(colorSchemeManager.reduceMotion ? nil : .snappy(duration: 0.3), value: viewModel.completedTasks) .animation(colorSchemeManager.reduceMotion ? nil : .snappy(duration: 0.3), value: viewModel.progress) } .padding() .contentShape(.rect) .animation(colorSchemeManager.reduceMotion ? nil : .snappy(duration: 0.35), value: viewModel.completedTasks) } }
Topic: UI Frameworks SubTopic: SwiftUI
10
2
277
Feb ’26
SwiftUI Slider will cause app to crash on macOS Tahoe RC
Hello, creating a simple-as-it-gets Slider in SwiftUI and then running that app on Mac Catalyst with the macOS idiom enabled, the app crashes: struct ContentView: View { @State private var sliderValue: Double = 0.4 var body: some View { VStack { Slider(value: $sliderValue) } .padding() } } running this will result in an exception: _setMinimumEnabledValue: is not supported on UISlider when running Catalyst apps in the Mac idiom. See UIBehavioralStyle for possible alternatives. This is obviously not ideal and also apparently no documented. Is there a workaround for this? It used to work for on macOS Sonoma. macOS 26 RC Xcode 26 RC FB20191635 Thanks!
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Oct ’25
How can I avoid overlapping the new iPadOS 26 window controls without using .toolbar?
I'm building an iPad app targeting iPadOS 26 using SwiftUI. Previously, I added a custom button by overlaying it in the top-left corner: content .overlay(alignment: .topLeading) { Button("Action") { // ... } This worked until iPadOS 26 introduced new window controls (minimize/close) in that corner, which now overlap my button. In the WWDC Session Video https://developer.apple.com/videos/play/wwdc2025/208/?time=298, they show adapting via .toolbar, but using .toolbar forces me to embed my view in a NavigationStack, which I don’t want. I really only want to add this single button, without converting the whole view structure. Constraints: No use of .toolbar (as it compels a NavigationStack). Keep existing layout—just one overlayed button. Support automatic adjustment for the new window controls across all window positions and split-screen configurations. What I’m looking for: A way to detect or read the system′s new window control safe area or layout region dynamically on iPadOS 26. Use that to offset my custom button—without adopting .toolbar. Preferably SwiftUI-only, no heavy view hierarchy changes. Is there a recommended API or SwiftUI technique to obtain the new control’s safe area (similar to a custom safeAreaInset for window controls) so I can reposition my overlayed button accordingly—without converting to NavigationStack or using .toolbar?
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Jul ’25
WebView makes website content unaccessible on the top/bottom edges
I'm being faced with an issue when using SwiftUI's WebView on iOS 26. In many websites, the top/bottom content is unaccessible due to being under the app's toolbars. It feels like the WebView doesn't really understand the safe areas where it's being shown, because the content should start right below the navigation bar, and only when the user scrolls down, the content should move under the bar (but it's always reachable if the users scroll back up). Here's a demo of the issue: Here's a 'fix' by ensuring that the content of the WebView never leaves its bounds. But as you can see, it feels out of place on iOS 26 (would be fine on previous OS versions if you had a fully opaque toolbar): Code: struct ContentView: View { var body: some View { NavigationStack { WebView(url: URL(string: "https://apple.com")).toolbar { ToolbarItem(placement: .primaryAction) { Button("Top content covered, unaccessible.") {} } } } } } Does anyone know if there's a way to fix it using some sort of view modifier combination or it's just broken as-is?
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14
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1
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644
Activity
Dec ’25
Request Review alert is unresponsive in iOS 26.1
Try this simple code: import SwiftUI import StoreKit struct ReviewView: View { @Environment(\.requestReview) var requestReview var body: some View { Button("Leave a review") { requestReview() } } } When the Review Alert shows, the "Not Now" button is disabled for some reason!? It was always tappable in all iOS versions that I remember. And there is no way to opt out, unless the user taps on the stars first. Is it a bug or a feature? Thanks for looking into it!
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4
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1
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1.3k
Activity
Dec ’25
dropDestination does not work inside List
I've discovered an issue with using iOS 16's Transferable drag-and-drop APIs for SwiftUI. The dropDestination modifier does not work when applied to a subview of a List. This code below will not work, unless you replace the List with a VStack or any other container (which, of course, removes all list-specific rendering). The draggable modifier will still work and the item will drag, but the dropDestination view won't react to it and neither closure will be called. struct MyView: View { var body: some View { List { Section { Text("drag this title") .font(.largeTitle) .draggable("a title") } Section { Color.pink .frame(width: 400, height: 400) .dropDestination(for: String.self) { receivedTitles, location in true } isTargeted: { print($0) } } } } } Has anyone encountered this bug and perhaps found a workaround?
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9
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0
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3.8k
Activity
Feb ’26
iOS 26 beta: UIResponder inputAccessoryView no longer integrates seamlessly with system keyboard
Prior to iOS 26, it was possible to design an inputAccessoryView(Controller) that would integrate seamlessly with the system keyboard, by which I mean appearing as a natural extension of the system keyboard. For example, using CYRKeyboardButton https://github.com/tmcintos/CYRKeyboardButton. To date, I have successfully used this to provide an enhanced numeric key row within my apps, which is a distinguishing feature of these apps. It took a lot of engineering and testing effort to perfect this design. However, with iOS 26 the design is completely broken due to the system keyboard UI change, which makes it impossible to display an inputAccessoryView seamlessly along the top of the system keyboard (see attached screenshots). In my opinion, it is just plain reckless for Apple to make these kinds of trivial UI changes, which break existing app designs without adding any significant value to the user experience. iOS ≤ 18.x: iOS 26 beta:
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2
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5
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423
Activity
Jun ’25
iOS 26 beta - Crash using QLPreviewController (QuickLook) in simulator.
Using the iOS 26 beta simulator, I am experiencing a crash using the QLPreviewController. This is easily reproduced using a small sample app and a sample excel file in the bundle. It does work in prior Xcode 16.4 and simulators (18.5). I didn't find any mention of this in Xcode 26 or iOS 26 release notes but I could have missed something. I don't have a spare device to update to iOS 26 and try on a real device so it may just be a simulator issue? Any feedback would be helpful. Thanks. Error: QuickLook/QLHostRemoteViewModel.swift:37: Fatal error: No extensions could be found matching '_AppExtensionQuery(extensionPointIdentifier: "com.apple.quicklook.UIExtensionPoint", predicate: nil, hostAuditToken: nil, extensionPoint: nil, allowsDuplicates: true)' Sample view controller... import UIKit import QuickLook class ViewController: UIViewController, QLPreviewControllerDataSource { var excelFileURL: URL! override func viewDidLoad() { super.viewDidLoad() // Load the Excel file (example: from bundle) if let url = Bundle.main.url(forResource: "file_example_XLSX_100", withExtension: "xlsx") { excelFileURL = url presentPreviewController() } } func presentPreviewController() { let previewController = QLPreviewController() previewController.dataSource = self present(previewController, animated: true, completion: nil) } // MARK: - QLPreviewControllerDataSource func numberOfPreviewItems(in controller: QLPreviewController) -> Int { return 1 } func previewController(_ controller: QLPreviewController, previewItemAt index: Int) -> QLPreviewItem { return excelFileURL as QLPreviewItem } }
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4
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5
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636
Activity
Jun ’25
Is this log noise? "CoreSVG: Error: NULL ref passed to getObjectCoreSVG: Error: NULL ref passed to getObject"
Before I waste time creating an Apple Developer Support ticket, I’m hoping an Apple DTS engineer can confirm if this is just log noise. Here’s the code: import SwiftUI struct ContentView: View { @State private var editMode: EditMode = .inactive @State private var items = ["Item 1", "Item 2", "Item 3"] var body: some View { NavigationStack { List { ForEach(items, id: \.self) { item in Text(item) } .onDelete { indexSet in items.remove(atOffsets: indexSet) } } .environment(\.editMode, $editMode) .toolbar { ToolbarItem(placement: .topBarTrailing) { EditButton() .environment(\.editMode, $editMode) } } } } } #Preview { ContentView() } When you run this code and tap Edit, you’ll initially get: CoreSVG has logged an error. Set environment variabe [sic] "CORESVG_VERBOSE" to learn more. After setting CORESVG_VERBOSE = YES, you’ll see: CoreSVG: Error: NULL ref passed to getObjectCoreSVG: Error: NULL ref passed to getObject This error only appears the first time Edit is tapped after a build and run. It won't happen again, even after force-quitting and reopening the app. The issue also only happens on iOS 18.0 and 18.1—I can’t reproduce it on iOS 17.5. Fortunately, it doesn’t seem to cause any negative side effects. Is this just log noise?
Topic: UI Frameworks SubTopic: SwiftUI
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3
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5
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1.7k
Activity
Apr ’25
Exception unarchiving UIToolbar in iOS 18.5 simulator with Xcode 26 beta 2
I'm running into a persistent problem with the iOS 18.5 simulator in Xcode 26 beta 2. I have built a very simple test app with a storyboard that includes only a toolbar added to the ViewController scene in the storyboard. The test app runs fine in iOS 26 simulators.When I try to run it in the iOS 18.5 simulator for iPhone Pro or iPad (16), it fails while unarchiving the storyboard (as far as I can tell) with this error message in the Xcode console: *** Terminating app due to uncaught exception 'NSInvalidUnarchiveOperationException', reason: 'Could not instantiate class named TtGC5UIKit17UICoreHostingViewVCS_21ToolbarVisualProvider8RootView because no class named TtGC5UIKit17UICoreHostingViewVCS_21ToolbarVisualProvider8RootView was found; the class needs to be defined in source code or linked in from a library (ensure the class is part of the correct target)' terminating due to uncaught exception of type NSException CoreSimulator 1043 - Device: iPad (A16) (3E70E25F-8434-4541-960D-1B58EB4037F3) - Runtime: iOS 18.5 (22F77) - DeviceType: iPad (A16) I'd love a simple workaround for this.
Replies
9
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4
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417
Activity
Aug ’25
NavigationStack back button ignores tint when presented in sheet
[Also submitted as FB21536505] When presenting a NavigationStack inside a .sheet, applying .tint(Color) does not affect the system back button on pushed destinations. The sheet’s close button adopts the tint, but the back chevron remains the default system color. REPRO Create a new iOS project and replace ContentView.swift with the code below. —or— Present a .sheet containing a NavigationStack. Apply .tint(.red) to the NavigationStack or sheet content. Push a destination using NavigationLink. EXPECTED The back button chevron adopts the provided tint color, consistent with other toolbar buttons and UIKit navigation behavior. ACTUAL The back button chevron remains the default system color. NOTES Reproduces consistently on: iOS 26.2 (23C54) iOS 26.3 (23D5089e) SCREEN RECORDING SAMPLE CODE import SwiftUI struct ContentView: View { @State private var isSheetPresented = false var body: some View { Button("Open Settings Sheet") { isSheetPresented = true } .sheet(isPresented: $isSheetPresented) { NavigationStack { List { NavigationLink("Push Detail") { DetailView() } } .navigationTitle("Settings") .navigationBarTitleDisplayMode(.inline) .toolbar { ToolbarItem(placement: .automatic) { Button("Close", systemImage: "xmark") { isSheetPresented = false } } } } .tint(.red) } } } private struct DetailView: View { var body: some View { List { Text("Detail View") } .navigationTitle("Detail") .navigationBarTitleDisplayMode(.inline) } }
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3
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1
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164
Activity
Jan ’26
SwiftUI iOS 26 .safeAreaBar issue with large navigation title
I have some really straight forward code in a sample project. For some reason when the app launches the title is blurred obscured by scrolledgeeffect blur. If I scroll down the title goes small as it should do and all looks fine. If I scroll back to the top, just before it reaches the top the title goes large and it looks correct, but once it actually reaches/snaps to the top, is then incorrectly blurs again. Is there anything obvious I'm doing wrong? Is this a bug? struct ContentView: View { var body: some View { NavigationStack { ScrollView { VStack { Rectangle().fill(Color.red.opacity(0.2)).frame(height: 200) Rectangle().frame(height: 200) Rectangle().frame(height: 200) Rectangle().frame(height: 200) Rectangle().frame(height: 200) } } .safeAreaBar(edge: .top) { Text("Test") } .navigationTitle(Title") } } }
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4
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1
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581
Activity
Jan ’26
CoreText' CTRunDraw can't draw underline attribute in iOS18 with Xcode 16 beta
demo code : - (void)drawRect:(CGRect)rect { CGContextRef context = UIGraphicsGetCurrentContext(); // Flip the coordinate system CGContextSetTextMatrix(context, CGAffineTransformIdentity); CGContextTranslateCTM(context, 0, self.bounds.size.height); CGContextScaleCTM(context, 1.0, -1.0); NSDictionary *attrs = @{NSFontAttributeName: [UIFont systemFontOfSize:20], NSForegroundColorAttributeName: [UIColor blueColor], NSUnderlineStyleAttributeName: @(NSUnderlineStyleThick), }; // Make an attributed string NSAttributedString *attributedString = [[NSAttributedString alloc] initWithString:@"Hello CoreText!" attributes:attrs]; CFAttributedStringRef attributedStringRef = (__bridge CFAttributedStringRef)attributedString; // Simple CoreText with CTFrameDraw CTFramesetterRef framesetter = CTFramesetterCreateWithAttributedString(attributedStringRef); CGPathRef path = CGPathCreateWithRect(self.bounds,NULL); CTFrameRef frame = CTFramesetterCreateFrame(framesetter,CFRangeMake(0, 0),path,NULL); //CTFrameDraw(frame, context); // You can comment the line 'CTFrameDraw' and use the following lines // draw with CTLineDraw CFArrayRef lines = CTFrameGetLines(frame); CGPoint lineOrigins[CFArrayGetCount(lines)]; CTFrameGetLineOrigins(frame, CFRangeMake(0, 0), lineOrigins); for (int i = 0; i < CFArrayGetCount(lines); i++) { CTLineRef line = CFArrayGetValueAtIndex(lines, i); CGContextSetTextPosition(context, lineOrigins[i].x, lineOrigins[i].y); // CTLineDraw(line, context); // You can comment the line 'CTLineDraw' and use the following lines // draw with CTRunDraw // use CTRunDraw will lost some attributes like NSUnderlineStyleAttributeName, // so you need draw it by yourself CFArrayRef runs = CTLineGetGlyphRuns(line); for (int j = 0; j < CFArrayGetCount(runs); j++) { CTRunRef run = CFArrayGetValueAtIndex(runs, j); CTRunDraw(run, context, CFRangeMake(0, 0)); } } } this code will use CTRunDraw to draw the content , and the underline will draw and show normally in iOS17 & Xcode 15 , But when you build it with XCode16 & iOS18 beta . the underline will be missing .
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2
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4
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762
Activity
Apr ’25
tabViewBottomAccessory inline functionality missing?
Summary As presented in the SwiftUI WWDC video, the new tabViewBottomAccessory should allow for unique contents for .inline. This is what was presented as being used for the Apple Music miniplayer. However, the functionality seems to be either missing or unintuitive. As seen in the photos attached, not only does .inline functionality not seem to do anything, but the inline accessory also has misaligned elements that cannot be fixed by conditionally modifying the contents. Build Target iOS 26.0 Details This problem recurs on physical devices, simulators, and Xcode previews. Here is a view I've constructed for use as a tabViewBottomAccessory: struct FitnessToolbarAccessory: View { @Environment(\.tabViewBottomAccessoryPlacement) var placement var body: some View { if (placement == .inline) { Text("hello") } else { HStack { HStack { Image(systemName: "dumbbell.fill") VStack(alignment: .leading) { Text("Active Workout") Text("Push Day - Chest") .font(.system(size: 13)) } Spacer() Image(systemName: "pause.fill") } .padding() } } } } Here is the result, working as expected in expanded mode: And here is the result in inline mode after minimizing the tabViewBottomAccessory: The content of this inline accessory is clearly incorrect, as it was specified to contain a Text view containing "hello". Additionally, the contents seem to have some incorrect alignment. This occurs regardless of the contents of the accessory, even plain text.
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2
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2
Views
216
Activity
Sep ’25
Navigation Bar shows top gap in landscape on iOS 26 beta when background color is set
Hi, I'm seeing an issue in iOS 26 beta related to UINavigationBar rendering in landscape. When a background color is set for the navigation bar and the device is rotated to landscape, an unexpected gap appears above the navigation bar. This also happens in the official sample project provided in Apple’s documentation: https://developer.apple.com/documentation/uikit/customizing-your-app-s-navigation-bar Is this a bug in the beta, or is there a workaround to avoid this behavior? Thanks in advance!
Topic: UI Frameworks SubTopic: UIKit Tags:
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5
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4
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427
Activity
Jul ’25
iPadOS 26 - Status bar overlaps with navigation bar
Hello, I'm experiencing a navigation bar positioning issue with my UIKit iPad app on iPadOS 26 (23A340) using Xcode 26 (17A321). The navigation bar positions under the status bar initially, and after orientation changes to landscape, it positions incorrectly below its expected location. This occurs on both real device (iPad mini A17 Pro) and simulator. My app uses UIKit + Storyboard with a Root Navigation Controller. A stack overflow post has reproduce the bug event if it's not in the same configuration: https://stackoverflow.com/questions/79752945/xcode-26-beta-6-ipados-26-statusbar-overlaps-with-navigationbar-after-presen I have checked all safe areas and tried changing some constraints, but nothing works. Have you encountered this bug before, or do you need additional information to investigate this issue?
Replies
7
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1
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984
Activity
Nov ’25
List Section with Swipe Action - glitches
Overview I have an iOS project where I have a list with sections. Each cell in the section can be swiped to have some action What needs to be done When swipe button is pressed the cell needs to move from one section to the other without a UI glitch. Problem When I press the swipe action button, there is a UI glitch and some warnings are thrown. UICollectionView internal inconsistency: unexpected removal of the current swipe occurrence's mask view. Please file a bug against UICollectionView. Reusable view: <SwiftUI.ListCollectionViewCell: 0x10700c200; baseClass = UICollectionViewListCell; frame = (16 40.3333; 370 52); hidden = YES; layer = <CALayer: 0x600000c12fa0>>; Collection view: <SwiftUI.UpdateCoalescingCollectionView: 0x106820800; baseClass = UICollectionView; frame = (0 0; 402 874); clipsToBounds = YES; autoresize = W+H; gestureRecognizers = <NSArray: 0x600000c13330>; backgroundColor = <UIDynamicSystemColor: 0x60000173a9c0; name = systemGroupedBackgroundColor>; layer = <CALayer: 0x600000c3a070>; contentOffset: {0, -62}; contentSize: {402, 229}; adjustedContentInset: {62, 0, 34, 0}; layout: <UICollectionViewCompositionalLayout: 0x10590edb0>; dataSource: <_TtGC7SwiftUI31UICollectionViewListCoordinatorGVS_28CollectionViewListDataSourceOs5Never_GOS_19SelectionManagerBoxS2___: 0x106822a00>>; Swipe occurrence: <UISwipeOccurrence: 0x103c161f0; indexPath: <NSIndexPath: 0xab1f048608f3828b> {length = 2, path = 0 - 0}, state: .triggered, direction: left, offset: 0> Test environment: Xcode 26.0.1 (17A400) iOS 26 Simulator (iPhone 17 Pro) Feedback filed: FB20890361 Code I have pasted below the minimum reproducible code ContentView import SwiftUI struct ContentView: View { @State private var dataStore = DataStore() var body: some View { List { ToDoSection(status: .notStarted, toDos: notStartedToDos) ToDoSection(status: .inProgress, toDos: inProgressToDos) ToDoSection(status: .completed, toDos: completedTodos) } } var notStartedToDos: [Binding<ToDoItem>] { $dataStore.todos.filter { $0.wrappedValue.status == .notStarted } } var inProgressToDos: [Binding<ToDoItem>] { $dataStore.todos.filter { $0.wrappedValue.status == .inProgress } } var completedTodos: [Binding<ToDoItem>] { $dataStore.todos.filter { $0.wrappedValue.status == .completed } } } ToDoSection import SwiftUI struct ToDoSection: View { let status: ToDoItem.Status let toDos: [Binding<ToDoItem>] var body: some View { if !toDos.isEmpty { Section(status.title) { ForEach(toDos) { toDo in Text(toDo.wrappedValue.title) .swipeActions(edge: .trailing) { if status == .notStarted { Button("Start") { toDo.wrappedValue.status = .inProgress } } if status != .completed { Button("Complete") { toDo.wrappedValue.status = .completed } Button("Move back") { toDo.wrappedValue.status = .notStarted } } } } } } } } ToDoItem import Foundation struct ToDoItem: Identifiable { let id: UUID let title: String var status: Status } extension ToDoItem { enum Status: Equatable { case notStarted case inProgress case completed var title: String { switch self { case .notStarted: "Not Started" case .inProgress: "In Progress" case .completed: "Completed" } } } } DataStore import Foundation @Observable class DataStore { var todos: [ToDoItem] init() { todos = [ ToDoItem(id: UUID(), title: "aaa", status: .notStarted), ToDoItem(id: UUID(), title: "bbb", status: .notStarted), ToDoItem(id: UUID(), title: "ccc", status: .notStarted) ] } }
Topic: UI Frameworks SubTopic: SwiftUI
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4
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1
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287
Activity
Nov ’25
Layout Engine Crash on iOS 26: NSInternalInconsistencyException
Starting with iOS 26 beta, I'm encountering an intermittent crash in production builds related to Auto Layout and background threading. This crash did not occur on iOS 18 or earlier and has become reproducible only on devices running iOS 26 betas. We have already performed a thorough audit of our code: • Verified that all UIKit view hierarchy and layout mutations occur on the main thread. • Re-tested with strict logging—confirmed all remaining layout/constraint/view updates are performed on the main thread. • No third-party UI SDKs are used in the relevant flow. Despite that, the crash still occurs and always from a background thread, during internal UIKit layout commits. Fatal Exception: NSInternalInconsistencyException Modifications to the layout engine must not be performed from a background thread after it has been accessed from the main thread. 0 MyApp 0x7adbc8 FIRCLSProcessRecordAllThreads + 172 1 MyApp 0x7adfd4 FIRCLSProcessRecordAllThreads + 1208 2 MyApp 0x7bc4b4 FIRCLSHandler + 56 3 MyApp 0x7bc25c __FIRCLSExceptionRecord_block_invoke + 100 4 libdispatch.dylib 0x1b7cc _dispatch_client_callout + 16 5 libdispatch.dylib 0x118a0 _dispatch_lane_barrier_sync_invoke_and_complete + 56 6 MyApp 0x7bb1f0 FIRCLSExceptionRecord + 224 7 MyApp 0x7bbd1c FIRCLSExceptionRecordNSException + 456 8 MyApp 0x7badf4 FIRCLSTerminateHandler() + 396 9 Intercom 0x86684 IntercomSDK_sentrycrashcm_cppexception_getAPI + 308 10 libc++abi.dylib 0x11bdc std::__terminate(void (*)()) + 16 11 libc++abi.dylib 0x15314 __cxa_get_exception_ptr + 86 12 libc++abi.dylib 0x152bc __cxxabiv1::failed_throw(__cxxabiv1::__cxa_exception*) + 90 13 libobjc.A.dylib 0x3190c objc_exception_throw + 448 14 CoreAutoLayout 0x13a4 -[NSISEngine optimize] + 314 15 CoreAutoLayout 0x1734 -[NSISEngine _optimizeWithoutRebuilding] + 72 16 CoreAutoLayout 0x1404 -[NSISEngine optimize] + 96 17 CoreAutoLayout 0xee8 -[NSISEngine performPendingChangeNotifications] + 104 18 UIKitCore 0x27ac8 -[UIView(Hierarchy) layoutSubviews] + 136 19 UIKitCore 0xfe760 -[UIWindow layoutSubviews] + 68 20 UIKitCore 0x234228 -[UITextEffectsWindow layoutSubviews] + 44 21 UIKitCore 0x27674 -[UIImageView animationImages] + 912 22 UIKitCore 0x28134 -[UIView(Internal) _viewControllerToNotifyOnLayoutSubviews] + 40 23 UIKitCore 0x18c2898 -[UIView(CALayerDelegate) layoutSublayersOfLayer:] + 2532 24 QuartzCore 0xabd98 CA::Layer::perform_update_(CA::Layer*, CALayer*, unsigned int, CA::Transaction*) + 116 25 QuartzCore 0x8e810 CA::Layer::update_if_needed(CA::Transaction*, unsigned int, unsigned int) + 600 26 QuartzCore 0xad45c CA::Layer::layout_and_display_if_needed(CA::Transaction*) + 200 27 QuartzCore 0x6e30c CA::Context::commit_transaction(CA::Transaction*, double, double*) + 540 28 QuartzCore 0x9afc4 CA::Transaction::commit() + 644 29 QuartzCore 0x16974c CA::Transaction::release_thread(void*) + 180 30 libsystem_pthread.dylib 0x4c28 _pthread_tsd_cleanup + 620 31 libsystem_pthread.dylib 0x4998 _pthread_exit + 84 32 libsystem_pthread.dylib 0x5e3c pthread_atfork + 54 33 libsystem_pthread.dylib 0x1440 _pthread_wqthread + 428 34 libsystem_pthread.dylib 0x8c0 start_wqthread + 8 Any ideas?
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4
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4
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748
Activity
Jul ’25
iOS 26 Beta 3 `safeAreaInsets`
I noticed that trying to access safeAreaInsets from the active window causes an infinite run loop. This issue appeared after updating to Beta 3. Here’s an example of the code: extension UIDevice { var safeAreaInsets: UIEdgeInsets { guard let windowScene = UIApplication.shared.connectedScenes.first as? UIWindowScene, let window = windowScene.windows.first(where: { $0.isKeyWindow }) else { return .zero } return window.safeAreaInsets } } The return doesn’t happen because it ends up in some kind of recursion.
Replies
5
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4
Views
662
Activity
Jul ’25
PHPickerViewController unusable via Mac Catalyst on macOS 26 when interface is "Scaled to Match iPad"
There is a serious usability issue with PHPickerViewController in a UIKit app running on macOS 26 via Mac Catalyst when the Mac Catalyst interface is set to “Scaled to Match iPad”. Mouse click and other pointer interactions do not take place in the correct position. This means you have to click in the wrong position to select a photo and to close the picker. This basically makes it unusable. To demonstrate, use Xcode 26 on macOS 26 to create a new iOS app project based on Swift/Storyboard. Then update ViewController.swift with the following code: import UIKit import PhotosUI class ViewController: UIViewController { override func viewDidLoad() { super.viewDidLoad() var cfg = UIButton.Configuration.plain() cfg.title = "Photo Picker" let button = UIButton(configuration: cfg, primaryAction: UIAction(handler: { _ in self.showPicker() })) button.translatesAutoresizingMaskIntoConstraints = false view.addSubview(button) NSLayoutConstraint.activate([ button.centerXAnchor.constraint(equalTo: view.safeAreaLayoutGuide.centerXAnchor), button.centerYAnchor.constraint(equalTo: view.safeAreaLayoutGuide.centerYAnchor), ]) } private func showPicker() { var config = PHPickerConfiguration() config.selectionLimit = 10 config.selection = .ordered let vc = PHPickerViewController(configuration: config) vc.delegate = self self.present(vc, animated: true) } } extension ViewController: PHPickerViewControllerDelegate { func picker(_ picker: PHPickerViewController, didFinishPicking results: [PHPickerResult]) { print("Picked \(results.count) photos") dismiss(animated: true) } } Then go to the "Supported Destinations" section of the project target. Add a "Mac (Mac Catalyst)" destination. Then under the "Deployment Information" section, make sure the "Mac Catalyst Interface" setting is "Scaled to Match iPad". Then build and run the app on a Mac (using the Mac Catalyst destination) with macOS 26.0.1. Make sure the Mac has a dozen or so pictures in the Photo Library to fully demonstrate the issue. When the app is run, a simple screen appears with one button in the middle. Click the button to bring up the PHPickerViewController. Now try to interact with the picker interface. Note that all pointer interactions are in the wrong place on the screen. This makes it nearly impossible to choose the correct photos and close the picker. Quit the app. Select the project and go to the General tab. In the "Deployment Info" change the “Mac Catalyst Interface” setting to “Optimize for Mac” and run the app again. Now the photo picker works just fine. If you run the app on a Mac running macOS 15 then the photo picker works just fine with either “Mac Catalyst Interface” setting. The problem only happens under macOS 26.0 (I do not have macOS 26.1 beta to test) when the “Mac Catalyst Interface” setting is set to “Scaled to Match iPad”. This is critical for my app. I cannot use “Optimize for Mac”. There are far too many issues with that setting (I use UIStepper and UIPickerView to start). So it is critical to the usability of my app under macOS 26 that this issue be resolved. It is expected that PHPickerViewController responds correctly to pointer events on macOS 26 when running a Mac Catalyst app set to “Scaled to Match iPad”. A version of this has been filed as FB20503207
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12
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4
Views
749
Activity
Oct ’25
Fix text in accessory view
Do you guys know how to fix the render of the text in the accessory view ? If I force the color of text to be .black it work but it will break dark mode, but forcing it .black : .white on color scheme changes makes white to still adapt to what is behind it I have noticed that Apple Music doesn’t have that artifact and it seems to break when images are behind the accessory view // MARK: - Next Routine Accessory @available(iOS 26.0, *) struct NetxRoutinesAccessory: View { @ObservedObject private var viewModel = RoutineProgressViewModel.shared @EnvironmentObject var colorSchemeManager: ColorSchemeManager @EnvironmentObject var routineStore: RoutineStore @EnvironmentObject var freemiumKit: FreemiumKit @ObservedObject var petsStore = PetsStore.shared @Environment(\.colorScheme) private var colorScheme // Tab accessory placement environment @Environment(\.tabViewBottomAccessoryPlacement) private var accessoryPlacement // Navigation callback var onTap: (() -> Void)? @State private var isButtonPressed = false /// Explicit black for light mode, white for dark mode private var textColor: Color { colorScheme == .dark ? .trueWhite : .trueBlack } /// Returns true when the accessory is in inline/minimized mode private var isInline: Bool { accessoryPlacement == .inline } var body: some View { accessoryContent() .onTapGesture { onTap?() } } private func accessoryContent() -> some View { HStack(spacing: 12) { // Content with smooth transitions VStack(alignment: .leading, spacing: 2) { if viewModel.totalTasks == 0 { Text(NSLocalizedString("Set up routines", comment: "Routines empty state")) .font(.subheadline.weight(.medium)) .foregroundColor(textColor) } else if let next = viewModel.nextRoutineTask() { HStack(spacing: 4) { Text(NSLocalizedString("Next", comment: "Next routine prefix")) .font(.caption) .foregroundColor(textColor) Text("•") .font(.caption) .foregroundColor(textColor) Text(next.routine.name) .font(.subheadline.weight(.medium)) .foregroundColor(textColor) .lineLimit(1) } .id("routine-\(next.routine.id)-\(next.time)") .transition(.opacity.combined(with: .move(edge: .leading))) HStack(spacing: 4) { Text(viewModel.petNames(for: next.routine.petIDs)) .font(.caption) .foregroundColor(textColor) Text("•") .font(.caption) .foregroundColor(textColor) Text(Routine.displayTimeFormatter.string(from: next.time)) .font(.caption.weight(.medium)) .foregroundColor(colorSchemeManager.accentColor ?? .blue) } .id("time-\(next.routine.id)-\(next.time)") .transition(.opacity.combined(with: .move(edge: .leading))) } else { // All tasks completed Text(NSLocalizedString("All done for today!", comment: "All routines completed")) .font(.subheadline.weight(.medium)) .foregroundColor(textColor) .transition(.opacity.combined(with: .scale)) Text("\(viewModel.completedTasks)/\(viewModel.totalTasks) " + NSLocalizedString("tasks", comment: "Tasks count suffix")) .font(.caption) .foregroundColor(textColor) } } .animation(colorSchemeManager.reduceMotion ? nil : .snappy(duration: 0.3), value: viewModel.completedTasks) .animation(colorSchemeManager.reduceMotion ? nil : .snappy(duration: 0.3), value: viewModel.progress) } .padding() .contentShape(.rect) .animation(colorSchemeManager.reduceMotion ? nil : .snappy(duration: 0.35), value: viewModel.completedTasks) } }
Topic: UI Frameworks SubTopic: SwiftUI
Replies
10
Boosts
2
Views
277
Activity
Feb ’26
SwiftUI Slider will cause app to crash on macOS Tahoe RC
Hello, creating a simple-as-it-gets Slider in SwiftUI and then running that app on Mac Catalyst with the macOS idiom enabled, the app crashes: struct ContentView: View { @State private var sliderValue: Double = 0.4 var body: some View { VStack { Slider(value: $sliderValue) } .padding() } } running this will result in an exception: _setMinimumEnabledValue: is not supported on UISlider when running Catalyst apps in the Mac idiom. See UIBehavioralStyle for possible alternatives. This is obviously not ideal and also apparently no documented. Is there a workaround for this? It used to work for on macOS Sonoma. macOS 26 RC Xcode 26 RC FB20191635 Thanks!
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4
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4
Views
435
Activity
Oct ’25
How can I avoid overlapping the new iPadOS 26 window controls without using .toolbar?
I'm building an iPad app targeting iPadOS 26 using SwiftUI. Previously, I added a custom button by overlaying it in the top-left corner: content .overlay(alignment: .topLeading) { Button("Action") { // ... } This worked until iPadOS 26 introduced new window controls (minimize/close) in that corner, which now overlap my button. In the WWDC Session Video https://developer.apple.com/videos/play/wwdc2025/208/?time=298, they show adapting via .toolbar, but using .toolbar forces me to embed my view in a NavigationStack, which I don’t want. I really only want to add this single button, without converting the whole view structure. Constraints: No use of .toolbar (as it compels a NavigationStack). Keep existing layout—just one overlayed button. Support automatic adjustment for the new window controls across all window positions and split-screen configurations. What I’m looking for: A way to detect or read the system′s new window control safe area or layout region dynamically on iPadOS 26. Use that to offset my custom button—without adopting .toolbar. Preferably SwiftUI-only, no heavy view hierarchy changes. Is there a recommended API or SwiftUI technique to obtain the new control’s safe area (similar to a custom safeAreaInset for window controls) so I can reposition my overlayed button accordingly—without converting to NavigationStack or using .toolbar?
Replies
2
Boosts
4
Views
408
Activity
Jul ’25