Hello, Users are reporting that widgets in my iOS app running on Mac OS are starting to crash after updating to MacOS 26.1. Everything works fine on iOS 26.1 and MacOS 15.6. The same bugs I found in iOS 26 beta 4, but then Apple fixed them in iOS 26RC and now they're back in macOS. Any suggestions? Crash report: Process: WidgetWebWidgetExt [23580] Path: /Volumes/VOLUME/*/WidgetWeb.app/PlugIns/WidgetWebWidgetExt.appex/WidgetWebWidgetExt Identifier: app.vitalek.widgetapp.web.WidgetWebExt Version: 7.5 (5796) AppVariant: 1:MacFamily20,1:18 Code Type: ARM-64 (Native) Role: unknown Parent Process: launchd [1] Coalition: app.vitalek.widgetapp.web.WidgetWebExt [28539] User ID: 501 Date/Time: 2025-11-04 11:47:19.0746 -0500 Launch Time: 2025-11-04 11:47:18.8035 -0500 Hardware Model: Mac14,6 OS Version: macOS 26.1 (25B78) Release Type: User Crash Reporter Key: 39D39455-7F69-746C-2A1D-7A6086F25541 Incident Identifier: 7AC31574-73A4-4320-B17A-C2819252EEDA Sleep/Wake UUID: 1535756C-44D8-497F-A288-07E53CD9B9E4 Time Awake Since Boot: 18000 seconds Time Since Wake: 7417 seconds System Integrity Protection: enabled Triggered by Thread: 0, Dispatch Queue: com.apple.main-thread Exception Type: EXC_CRASH (SIGABRT) Exception Codes: 0x0000000000000000, 0x0000000000000000 Termination Reason: Namespace SIGNAL, Code 6, Abort trap: 6 Terminating Process: WidgetWebWidgetExt [23580] Application Specific Information: abort() called Thread 0 Crashed:: Dispatch queue: com.apple.main-thread 0 libsystem_kernel.dylib 0x1926e75b0 __pthread_kill + 8 1 libsystem_pthread.dylib 0x192721888 pthread_kill + 296 2 libsystem_c.dylib 0x192626850 abort + 124 3 libc++abi.dylib 0x1926d5858 __abort_message + 132 4 libc++abi.dylib 0x1926c44d4 demangling_terminate_handler() + 304 5 libobjc.A.dylib 0x1922f0414 _objc_terminate() + 156 6 libc++abi.dylib 0x1926d4c2c std::__terminate(void (*)()) + 16 7 libc++abi.dylib 0x1926d8394 __cxxabiv1::failed_throw(__cxxabiv1::__cxa_exception*) + 88 8 libc++abi.dylib 0x1926d833c __cxa_throw + 92 9 libobjc.A.dylib 0x1922e6580 objc_exception_throw + 448 10 Foundation 0x19495122c -[NSAssertionHandler handleFailureInMethod:object:file:lineNumber:description:] + 288 11 UIKitMacHelper 0x1b0240c80 -[UINSApplicationDelegate init] + 1348 12 UIKitMacHelper 0x1b02406d8 __41+[UINSApplicationDelegate sharedDelegate]_block_invoke + 48 13 libdispatch.dylib 0x19257eac4 _dispatch_client_callout + 16 14 libdispatch.dylib 0x192567a60 _dispatch_once_callout + 32 15 UIKitMacHelper 0x1b02405dc +[UINSApplicationDelegate sharedDelegate] + 324 16 UIKitCore 0x1ca488518 -[UIScene setTitle:] + 188 17 UIKitCore 0x1ca487e90 -[UIScene initWithSession:connectionOptions:] + 1084 18 UIKitCore 0x1cb2a6a54 -[UIWindowScene initWithSession:connectionOptions:] + 92 19 UIKitCore 0x1ca66b44c -[_UIScreenBasedWindowScene initWithScreen:session:lookupKey:] + 292 20 UIKitCore 0x1ca66aff4 +[_UIScreenBasedWindowScene _unassociatedWindowSceneForScreen:create:] + 408 21 UIKitCore 0x1cb09171c -[UIWindow _uiWindowSceneFromFBSScene:] + 704 22 UIKitCore 0x1cb0918cc -[UIWindow _initWithFrame:debugName:scene:attached:] + 92 23 UIKitCore 0x1cb091e68 -[UIWindow _initWithOrientation:] + 56 24 UIKitCore 0x1cb091ebc -[UIWindow init] + 72 25 WidgetWebWidgetExt 0x1027eb250 0x102718000 + 864848 26 WidgetWebWidgetExt 0x1027ea418 0x102718000 + 861208 27 WidgetWebWidgetExt 0x1027f5bc8 0x102718000 + 908232 28 WidgetWebWidgetExt 0x1027f4bfc 0x102718000 + 904188 29 WidgetWebWidgetExt 0x1027cf9f4 0x102718000 + 752116 30 WidgetWebWidgetExt 0x102807c20 0x102718000 + 982048 31 libdispatch.dylib 0x19257eac4 _dispatch_client_callout + 16 32 libdispatch.dylib 0x1925696e4 _dispatch_continuation_pop + 596 33 libdispatch.dylib 0x19257c800 _dispatch_source_latch_and_call + 396 34 libdispatch.dylib 0x19257b4d4 _dispatch_source_invoke + 844 35 libdispatch.dylib 0x19259c008 _dispatch_main_queue_drain.cold.5 + 592 36 libdispatch.dylib 0x192573f48 _dispatch_main_queue_drain + 180 37 libdispatch.dylib 0x192573e84 _dispatch_main_queue_callback_4CF + 44 38 CoreFoundation 0x1927ea980 __CFRUNLOOP_IS_SERVICING_THE_MAIN_DISPATCH_QUEUE__ + 16 39 CoreFoundation 0x1927bf7dc __CFRunLoopRun + 1944 40 CoreFoundation 0x19287935c _CFRunLoopRunSpecificWithOptions + 532 41 Foundation 0x194a06890 -[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 212 42 Foundation 0x194005a50 -[NSRunLoop(NSRunLoop) run] + 64 43 libxpc.dylib 0x19240ce14 _xpc_objc_main + 668 44 libxpc.dylib 0x19241ecf8 _xpc_main + 40 45 libxpc.dylib 0x19241ecd0 xpc_bs_main + 16 46 BoardServices 0x1ac51179c +[BSServicesConfiguration activateXPCService] + 72 47 ExtensionFoundation 0x237a92710 _EXRunningExtension.resume() + 1592 48 ExtensionFoundation 0x237a911a8 _EXRunningExtension.start(withArguments:count:) + 124 49 ExtensionFoundation 0x237a88f24 EXExtensionMain(_:_:) + 668 50 Foundation 0x1940065ec NSExtensionMain + 200 51 dyld 0x192359d54 start + 7184

I suppose this is a bug in compiler. Xcode 16.0 (16A242d) - AppStore release version When building a project from Xcode 15 in Xcode 16, an error occurs: appintentsmetadataprocessor[12633:13677489] error: At least one halting error produced during export. No AppIntents metadata have been exported and this target is not usable with AppIntents until errors are resolved. AppShortcut phrases may have at most one parameter, but found phrase, "Set Dark Mode ${darkMode} for Widget ${widget}" with more than one parameter: darkMode, widget Apparently this is an Xcode bug because I have a production app with this AppShortcut and it works fine in Apple Shortcuts. Everything is made according to the official WWDC video about AppShortcuts https://developer.apple.com/videos/play/wwdc2022/10170