App Terminated with 0x8BADF00D: Main Thread Blocked During Back-to-Back Messaging

Hello,

I'm experiencing an issue with my app where it's being terminated by the system with a watchdog violation during back-to-back messaging operations. I've analyzed the crash logs but would appreciate additional insights on optimizing my approach. I'd appreciate any insights on how to resolve this problem.

Crash Details: Exception Type: EXC_CRASH (SIGKILL) Termination Reason: FRONTBOARD with code 0x8BADF00D Error: "scene-update watchdog transgression: app exhausted real time allowance of 10.00 seconds"

Reproduction Steps: User A initiates back-to-back messages to other User User A's UI becomes unresponsive and eventually the app crashes.

Stack Trace Analysis: The crash occurs on the main thread, which appears to be blocked waiting for a condition in the keyboard handling system. The thread is stuck in [UIKeyboardTaskQueue _lockWhenReadyForMainThread] and related methods, suggesting an issue with keyboard-related operations during the messaging process.

Crash Tag

Exception Type:  EXC_CRASH (SIGKILL)
Exception Codes: 0x0000000000000000, 0x0000000000000000
Termination Reason: FRONTBOARD 2343432205 
<RBSTerminateContext| domain:10 code:0x8BADF00D explanation:scene-update watchdog transgression: app<com.msikodiak.eptt(AD934F8A-DF57-4B75-BE73-8CF1A9A8F856)>:301 exhausted real (wall clock) time allowance of 10.00 seconds
ProcessVisibility: Foreground
ProcessState: Running
WatchdogEvent: scene-update
WatchdogVisibility: Background
WatchdogCPUStatistics: (
"Elapsed total CPU time (seconds): 6.390 (user 3.640, system 2.750), 11% CPU",
"Elapsed application CPU time (seconds): 0.020, 0% CPU"
)
ThermalInfo: (
"Thermal Level:   0",
"Thermal State:   nominal"
) reportType:CrashLog maxTerminationResistance:Interactive>

Triggered by Thread:  0

Thread 0 name:   Dispatch queue: com.apple.main-thread
Thread 0 Crashed:
0   libsystem_kernel.dylib        	       0x1e773d438 __psynch_cvwait + 8
1   libsystem_pthread.dylib       	       0x2210bc328 _pthread_cond_wait + 1028
2   Foundation                    	       0x1957d8a64 -[NSCondition waitUntilDate:] + 132
3   Foundation                    	       0x1957d8888 -[NSConditionLock lockWhenCondition:beforeDate:] + 80
4   UIKitCore                     	       0x1998f1238 -[UIKeyboardTaskQueue _lockWhenReadyForMainThread] + 456
5   UIKitCore                     	       0x19a3d775c __59-[UIKeyboardImpl updateAutocorrectPrompt:executionContext:]_block_invoke_9 + 28
6   UIKitCore                     	       0x19986b084 -[UIKeyboardTaskQueue lockWhenReadyForMainThread] + 168
7   UIKitCore                     	       0x19a3f2994 -[UIKeyboardTaskQueue waitUntilTaskIsFinished:] + 148
8   UIKitCore                     	       0x19a3f2ac4 -[UIKeyboardTaskQueue performSingleTask:breadcrumb:] + 132
9   UIKitCore                     	       0x199e2f7e4 -[_UIKeyboardStateManager updateForChangedSelection] + 144
10  UIKitCore                     	       0x199e24200 -[_UIKeyboardStateManager invalidateTextEntryContextForTextInput:] + 92
11  WebKit                        	       0x1ad52fa54 WebKit::PageClientImpl::didProgrammaticallyClearFocusedElement(WebCore::ElementContext&&) + 40
12  WebKit                        	       0x1ad55adcc WebKit::WebPageProxy::didProgrammaticallyClearFocusedElement(WebCore::ElementContext&&) + 136
13  WebKit                        	       0x1acec74e8 WebKit::WebPageProxy::didReceiveMessage(IPC::Connection&, IPC::Decoder&) + 18604
14  WebKit                        	       0x1acd21184 IPC::MessageReceiverMap::dispatchMessage(IPC::Connection&, IPC::Decoder&) + 236
15  WebKit                        	       0x1ace449b8 WebKit::WebProcessProxy::dispatchMessage(IPC::Connection&, IPC::Decoder&) + 40
16  WebKit                        	       0x1ace44228 WebKit::WebProcessProxy::didReceiveMessage(IPC::Connection&, IPC::Decoder&) + 1764
17  WebKit                        	       0x1acd1e904 IPC::Connection::dispatchMessage(WTF::UniqueRef<IPC::Decoder>) + 268
18  WebKit                        	       0x1acd1e478 IPC::Connection::dispatchIncomingMessages() + 576
19  JavaScriptCore                	       0x1ae386b8c WTF::RunLoop::performWork() + 524
20  JavaScriptCore                	       0x1ae386960 WTF::RunLoop::performWork(void*) + 36
21  CoreFoundation                	       0x196badce4 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 28
22  CoreFoundation                	       0x196badc78 __CFRunLoopDoSource0 + 172
23  CoreFoundation                	       0x196bac9fc __CFRunLoopDoSources0 + 232
24  CoreFoundation                	       0x196babc3c __CFRunLoopRun + 840
25  CoreFoundation                	       0x196bd0700 CFRunLoopRunSpecific + 572
26  GraphicsServices              	       0x1e3711190 GSEventRunModal + 168
27  UIKitCore                     	       0x1997ee240 -[UIApplication _run] + 816
28  UIKitCore                     	       0x1997ec470 UIApplicationMain + 336
29  Telstra PTT                   	       0x1004d30c8 main + 56
30  dyld                          	       0x1bd5d3ad8 start + 5964