I cannot reproduce the crash what I got, but there is an old crash issue..
It is a crash stack that I get from Xcode below...
It is a crash stack that I get from Xcode below...
Code Block Incident Identifier: EDABE3CC-2E48-4D20-A43E-A06939283A71 Hardware Model: iPhone10,2 AppVariant: 1:iPhone10,2:13 Code Type: ARM-64 (Native) Role: Foreground Parent Process: launchd [1] Date/Time: 2021-04-16 18:00:38.7526 +0900 Launch Time: 2021-04-16 18:00:26.7419 +0900 OS Version: iPhone OS 14.4.2 (18D70) Release Type: User Baseband Version: 6.41.01 Report Version: 104 Exception Type: EXC_BAD_ACCESS (SIGSEGV) Exception Subtype: KERN_PROTECTION_FAILURE at 0x000000016dc0fff0 VM Region Info: 0x16dc0fff0 is in 0x16dc0c000-0x16dc10000; bytes after start: 16368 bytes before end: 15 REGION TYPE START - END [ VSIZE] PRT/MAX SHRMOD REGION DETAIL MALLOC_LARGE 11e300000-11e314000 [ 80K] rw-/rwx SM=PRV GAP OF 0x4f8f8000 BYTES ---> STACK GUARD 16dc0c000-16dc10000 [ 16K] ---/rwx SM=NUL ... for thread 0 Stack 16dc10000-16dd0c000 [ 1008K] rw-/rwx SM=COW thread 0 Termination Signal: Segmentation fault: 11 Termination Reason: Namespace SIGNAL, Code 0xb Terminating Process: exc handler [4014] Triggered by Thread: 0 Thread 0 name: Thread 0 Crashed: 0 libobjc.A.dylib 0x00000001ba582c78 lookUpImpOrForwardTryCache + 0 (objc-runtime-new.mm:6368) 1 libobjc.A.dylib 0x00000001ba58f9a4 objc_loadWeakRetained + 336 (NSObject.mm:575) 2 UIKitCore 0x00000001a83a2f34 -[UIViewController _popoverController] + 120 (UIViewController.m:6374) 3 UIKitCore 0x00000001a8394f88 -[UIViewController nextResponder] + 64 (UIViewController.m:2646) 4 UIKitCore 0x00000001a8a8ccf4 -[UIResponder _containedInAbsoluteResponderChain] + 24 (UIResponder.m:257) 5 UIKitCore 0x00000001a8a8cd0c -[UIResponder _containedInAbsoluteResponderChain] + 48 (UIResponder.m:257) 6 UIKitCore 0x00000001a8a8cd0c -[UIResponder _containedInAbsoluteResponderChain] + 48 (UIResponder.m:257) ... 510 UIKitCore 0x00000001a8a8cd0c -[UIResponder _containedInAbsoluteResponderChain] + 48 (UIResponder.m:257) Thread 1: 0 libsystem_pthread.dylib 0x00000001eea1486c start_wqthread + 0 Thread 2: 0 libsystem_pthread.dylib 0x00000001eea1486c start_wqthread + 0 Thread 3 name: Thread 3: 0 libsystem_kernel.dylib 0x00000001d212b290 __ulock_wait + 8 1 libsystem_platform.dylib 0x00000001eea00dec _os_unfair_lock_lock_slow + 192 2 libobjc.A.dylib 0x00000001ba58f8c0 objc_loadWeakRetained + 108 (lock_private.h:716) 3 libobjc.A.dylib 0x00000001ba58fab8 objc_loadWeak + 20 (NSObject.mm:608) 4 QuartzCore 0x00000001a93c349c CA::Context::retain_objc_contexts() + 196 (x-weak.h:119) 5 QuartzCore 0x00000001a9516fc4 +[CAContext allContexts] + 12 (CAContext.mm:86) 6 UIKitCore 0x00000001a8aad280 +[UIWindow _windowWithContextId:] + 84 (UIWindow.m:7270) 7 UIKitCore 0x00000001a8b09450 _UIEventHIDUIWindowForHIDEvent + 40 (UIEventHIDHelpers.m:310) 8 UIKitCore 0x00000001a8b09688 _UIEventHIDShouldTransformEvent + 16 (UIEventHIDHelpers.m:482) 9 UIKitCore 0x00000001a8aeef68 -[_UIHIDTransformer _inputEventsForHIDEvent:] + 60 (_UIHIDTransformer.m:854) 10 UIKitCore 0x00000001a8aeebf4 -[_UIHIDTransformer handleHIDEvent:] + 68 (_UIHIDTransformer.m:823) 11 UIKitCore 0x00000001a8b081a8 ___iosMacEventExtractionFilter_block_invoke_2 + 80 (UIEventFetcher.m:203) 12 UIKitCore 0x00000001a8b05c64 __30-[UIEventFetcher filterEvents]_block_invoke + 452 (UIEventFetcher.m:1204) 13 UIKitCore 0x00000001a8b052f4 -[UIEventFetcher _receiveHIDEventInternal:] + 464 (UIEventFetcher.m:561) 14 IOKit 0x00000001b0991888 __IOHIDEventSystemClientQueueCallback + 280 (IOHIDEventSystemClient.c:1171) 15 CoreFoundation 0x00000001a614bb54 __CFMachPortPerform + 172 (CFMachPort.c:537) 16 CoreFoundation 0x00000001a616f420 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__ + 56 (CFRunLoop.c:1991) 17 CoreFoundation 0x00000001a616e834 __CFRunLoopDoSource1 + 588 (CFRunLoop.c:2131) 18 CoreFoundation 0x00000001a61689f4 __CFRunLoopRun + 2332 (CFRunLoop.c:3146) 19 CoreFoundation 0x00000001a6167ba0 CFRunLoopRunSpecific + 572 (CFRunLoop.c:3242) 20 Foundation 0x00000001a73877f8 -[NSRunLoop(NSRunLoop) runMode:beforeDate:] + 228 (NSRunLoop.m:374) 21 Foundation 0x00000001a73876d8 -[NSRunLoop(NSRunLoop) runUntilDate:] + 88 (NSRunLoop.m:421) 22 UIKitCore 0x00000001a8b05054 -[UIEventFetcher threadMain] + 504 (UIEventFetcher.m:838) 23 Foundation 0x00000001a74e44bc __NSThread__start__ + 848 (NSThread.m:724) 24 libsystem_pthread.dylib 0x00000001eea0fc9c _pthread_start + 288 (pthread.c:881) 25 libsystem_pthread.dylib 0x00000001eea14880 thread_start + 8 Thread 4: 0 libsystem_pthread.dylib 0x00000001eea1486c start_wqthread + 0 Thread 0 crashed with ARM Thread State (64-bit): x0: 0x000000010b8ad800 x1: 0x00000001f1f3dc83 x2: 0x0000000282587850 x3: 0x0000000000000001 x4: 0x0000000000000008 x5: 0x0000000000000001 x6: 0x0000000000000000 x7: 0x0000000281f9f270 x8: 0x00000001f1f3d000 x9: 0x0000000282587d90 x10: 0x0000000000000000 x11: 0x00ff00010b98a000 x12: 0x00000000000000fc x13: 0x000000010b98afb0 x14: 0x0000000000000000 x15: 0x00000001144065d0 x16: 0x00000001ba58f854 x17: 0x00000001a83a2ebc x18: 0x0000000000000000 x19: 0x000000010b8ad800 x20: 0x00000001ff9a0740 x21: 0x00000001f1f3dc83 x22: 0x0000000282587850 x23: 0x0000000105693960 x24: 0x00000001ff9a0640 x25: 0x000000010b406a80 x26: 0x000000010fb054f0 x27: 0x00000001f1c14883 x28: 0x0000000281f9f270 fp: 0x000000016dc10050 lr: 0x00000001ba58f9a4 sp: 0x000000016dc10020 pc: 0x00000001ba582c78 cpsr: 0x20000000 esr: 0x92000047 (Data Abort) byte write Translation fault