Sometimes mac app with Zoom SDK hangs up (not responding) at the beginning of the meeting

Description
Sometimes (in around 20% cases), the app hangs up at the beginning of the meeting when I start to display participant’s video. Please see the stack trace for more details, check thread #53 and main. Only Zoom SDK uses NSOpenGLContext in the app.

Any help will be very appreciated, thanks!

Which version?
v4.6.15798.0403
Mac:
macOS Catalina
Version 10.15.4 (19E266)

MacBook Pro (Retina, 15-inch, Mid 2015)
2.2 GHz Quad-Core Intel Core i7
16 GB 1600 MHz DDR3
Intel Iris Pro 1536 MB

Additional context
Sample app has reproducibility rate much, much lower. Took me around 100 attempts to reproduce.

* thread #1, queue = 'com.apple.main-thread', stop reason = signal SIGSTOP
  * frame #0: 0x00007fff71912062 libsystem_kernel.dylib`__psynch_mutexwait + 10
    frame #1: 0x0000000100da5398 libsystem_pthread.dylib`_pthread_mutex_firstfit_lock_wait + 101
    frame #2: 0x0000000100da31d8 libsystem_pthread.dylib`_pthread_mutex_firstfit_lock_slow + 225
    frame #3: 0x00007fff39ec310e Foundation`-[NSRecursiveLock lock] + 22
    frame #4: 0x000000010c67d0bd nydus`___lldb_unnamed_symbol1607$$nydus + 31
    frame #5: 0x000000010c6f69e0 nydus`___lldb_unnamed_symbol5217$$nydus + 31
    frame #6: 0x00007fff351cb96d AppKit`__27-[NSOpenGLContext setView:]_block_invoke + 547
    frame #7: 0x00007fff34b5bfce AppKit`NSPerformVisuallyAtomicChange + 132
    frame #8: 0x00007fff34ea8607 AppKit`-[NSOpenGLContext setView:] + 144
    frame #9: 0x00007fff352049f4 AppKit`-[_NSOpenGLViewBackingLayer display] + 589
    frame #10: 0x00007fff43367469 QuartzCore`CA::Layer::display_if_needed(CA::Transaction*) + 757
    frame #11: 0x00007fff43345716 QuartzCore`CA::Context::commit_transaction(CA::Transaction*, double) + 334
    frame #12: 0x00007fff43344304 QuartzCore`CA::Transaction::commit() + 644
    frame #13: 0x00007fff34ca3a01 AppKit`__62+[CATransaction(NSCATransaction) NS_setFlushesWithDisplayLink]_block_invoke + 266
    frame #14: 0x00007fff353c2950 AppKit`___NSRunLoopObserverCreateWithHandler_block_invoke + 41
    frame #15: 0x00007fff378864f5 CoreFoundation`__CFRUNLOOP_IS_CALLING_OUT_TO_AN_OBSERVER_CALLBACK_FUNCTION__ + 23
    frame #16: 0x00007fff37886427 CoreFoundation`__CFRunLoopDoObservers + 457
    frame #17: 0x00007fff378859c5 CoreFoundation`__CFRunLoopRun + 874
    frame #18: 0x00007fff37884ffe CoreFoundation`CFRunLoopRunSpecific + 462
    frame #19: 0x00007fff364b8abd HIToolbox`RunCurrentEventLoopInMode + 292
    frame #20: 0x00007fff364b87d5 HIToolbox`ReceiveNextEventCommon + 584
    frame #21: 0x00007fff364b8579 HIToolbox`_BlockUntilNextEventMatchingListInModeWithFilter + 64
    frame #22: 0x00007fff34b03c99 AppKit`_DPSNextEvent + 883
    frame #23: 0x00007fff34b024e0 AppKit`-[NSApplication(NSEvent) _nextEventMatchingEventMask:untilDate:inMode:dequeue:] + 1352
    frame #24: 0x00007fff34af41ee AppKit`-[NSApplication run] + 658
    frame #25: 0x00007fff34ac5ff6 AppKit`NSApplicationMain + 777
    frame #26: 0x000000010005998d Livekick`main at AppDelegate.swift:12:7
    frame #27: 0x00007fff717cecc9 libdyld.dylib`start + 1
    frame #28: 0x00007fff717cecc9 libdyld.dylib`start + 1
  thread #10, name = 'com.apple.NSEventThread'
    frame #0: 0x00007fff7190fdfa libsystem_kernel.dylib`mach_msg_trap + 10
    frame #1: 0x00007fff71910170 libsystem_kernel.dylib`mach_msg + 60
    frame #2: 0x00007fff378870b5 CoreFoundation`__CFRunLoopServiceMachPort + 247
    frame #3: 0x00007fff37885b82 CoreFoundation`__CFRunLoopRun + 1319
    frame #4: 0x00007fff37884ffe CoreFoundation`CFRunLoopRunSpecific + 462
    frame #5: 0x00007fff34ca55b4 AppKit`_NSEventThread + 132
    frame #6: 0x0000000100da7c65 libsystem_pthread.dylib`_pthread_start + 148
    frame #7: 0x0000000100da34af libsystem_pthread.dylib`thread_start + 15
  thread #11
    frame #0: 0x00007fff71912882 libsystem_kernel.dylib`__psynch_cvwait + 10
    frame #1: 0x0000000100da7f81 libsystem_pthread.dylib`_pthread_cond_wait + 698
    frame #2: 0x000000010ca532c2 zWebService`___lldb_unnamed_symbol1944$$zWebService + 157
    frame #3: 0x000000010cc1e895 zWebService`___lldb_unnamed_symbol5366$$zWebService + 59
    frame #4: 0x000000010ca4fdc5 zWebService`___lldb_unnamed_symbol1921$$zWebService + 19
    frame #5: 0x0000000100da7c65 libsystem_pthread.dylib`_pthread_start + 148
    frame #6: 0x0000000100da34af libsystem_pthread.dylib`thread_start + 15
  thread #12
    frame #0: 0x00007fff71912882 libsystem_kernel.dylib`__psynch_cvwait + 10
    frame #1: 0x0000000100da7f81 libsystem_pthread.dylib`_pthread_cond_wait + 698
    frame #2: 0x000000010ca532c2 zWebService`___lldb_unnamed_symbol1944$$zWebService + 157
    frame #3: 0x000000010cc20a45 zWebService`___lldb_unnamed_symbol5371$$zWebService + 7861
    frame #4: 0x000000010ca4fdc5 zWebService`___lldb_unnamed_symbol1921$$zWebService + 19
    frame #5: 0x0000000100da7c65 libsystem_pthread.dylib`_pthread_start + 148
    frame #6: 0x0000000100da34af libsystem_pthread.dylib`thread_start + 15
  thread #13
    frame #0: 0x00007fff71912756 libsystem_kernel.dylib`__semwait_signal + 10
    frame #1: 0x00007fff71895eea libsystem_c.dylib`nanosleep + 196
    frame #2: 0x00007fff71895de4 libsystem_c.dylib`usleep + 53
    frame #3: 0x000000010ca517fe zWebService`___lldb_unnamed_symbol1924$$zWebService + 6400
    frame #4: 0x000000010ca52e61 zWebService`___lldb_unnamed_symbol1936$$zWebService + 9
    frame #5: 0x0000000100da7c65 libsystem_pthread.dylib`_pthread_start + 148
    frame #6: 0x0000000100da34af libsystem_pthread.dylib`thread_start + 15
  thread #14
    frame #0: 0x00007fff719163d6 libsystem_kernel.dylib`poll + 10
    frame #1: 0x0000000100dcc950 util`ssb::poll_t::loop() + 234
    frame #2: 0x0000000100dd0f1a util`ssb::thread_base_t::thread_routine(void*) + 14
    frame #3: 0x0000000100da7c65 libsystem_pthread.dylib`_pthread_start + 148
    frame #4: 0x0000000100da34af libsystem_pthread.dylib`thread_start + 15
  thread #15
    frame #0: 0x00007fff719163d6 libsystem_kernel.dylib`poll + 10
    frame #1: 0x0000000100dcc950 util`ssb::poll_t::loop() + 234
    frame #2: 0x0000000100dd0f1a util`ssb::thread_base_t::thread_routine(void*) + 14
    frame #3: 0x0000000100da7c65 libsystem_pthread.dylib`_pthread_start + 148
    frame #4: 0x0000000100da34af libsystem_pthread.dylib`thread_start + 15
  thread #16
    frame #0: 0x00007fff71912756 libsystem_kernel.dylib`__semwait_signal + 10
    frame #1: 0x00007fff71895eea libsystem_c.dylib`nanosleep + 196
    frame #2: 0x00007fff71895de4 libsystem_c.dylib`usleep + 53
    frame #3: 0x000000010c1a835c zChatApp`___lldb_unnamed_symbol6320$$zChatApp + 8204
    frame #4: 0x000000010c1a8b23 zChatApp`___lldb_unnamed_symbol6329$$zChatApp + 9
    frame #5: 0x0000000100da7c65 libsystem_pthread.dylib`_pthread_start + 148
    frame #6: 0x0000000100da34af libsystem_pthread.dylib`thread_start + 15
  thread #17
    frame #0: 0x00007fff71912756 libsystem_kernel.dylib`__semwait_signal + 10
    frame #1: 0x00007fff71895eea libsystem_c.dylib`nanosleep + 196
    frame #2: 0x00007fff71895de4 libsystem_c.dylib`usleep + 53
    frame #3: 0x000000010cbaaf3d zWebService`___lldb_unnamed_symbol4145$$zWebService + 137
    frame #4: 0x000000010ca52e61 zWebService`___lldb_unnamed_symbol1936$$zWebService + 9
    frame #5: 0x0000000100da7c65 libsystem_pthread.dylib`_pthread_start + 148
    frame #6: 0x0000000100da34af libsystem_pthread.dylib`thread_start + 15
  thread #18
    frame #0: 0x00007fff719163d6 libsystem_kernel.dylib`poll + 10
    frame #1: 0x0000000100dcc950 util`ssb::poll_t::loop() + 234
    frame #2: 0x0000000100dd0f1a util`ssb::thread_base_t::thread_routine(void*) + 14
    frame #3: 0x0000000100da7c65 libsystem_pthread.dylib`_pthread_start + 148
    frame #4: 0x0000000100da34af libsystem_pthread.dylib`thread_start + 15
  thread #25
    frame #0: 0x00007fff719163d6 libsystem_kernel.dylib`poll + 10
    frame #1: 0x0000000100dcc950 util`ssb::poll_t::loop() + 234
    frame #2: 0x0000000100dd0f1a util`ssb::thread_base_t::thread_routine(void*) + 14
    frame #3: 0x0000000100da7c65 libsystem_pthread.dylib`_pthread_start + 148
    frame #4: 0x0000000100da34af libsystem_pthread.dylib`thread_start + 15
  thread #26, name = 'AMCP Logging Spool'
    frame #0: 0x00007fff7190fe36 libsystem_kernel.dylib`semaphore_wait_trap + 10
    frame #1: 0x00007fff6b3a8b16 caulk`caulk::mach::semaphore::wait() + 16
    frame #2: 0x00007fff6b3a89b2 caulk`caulk::semaphore::timed_wait(double) + 106
    frame #3: 0x00007fff6b3a87c4 caulk`caulk::concurrent::details::worker_thread::run() + 30
    frame #4: 0x00007fff6b3a81e4 caulk`void* caulk::thread_proxy<std::__1::tuple<caulk::thread::attributes, void (caulk::concurrent::details::worker_thread::*)(), std::__1::tuple<caulk::concurrent::details::worker_thread*> > >(void*) + 45
    frame #5: 0x0000000100da7c65 libsystem_pthread.dylib`_pthread_start + 148
    frame #6: 0x0000000100da34af libsystem_pthread.dylib`thread_start + 15
  thread #27
    frame #0: 0x00007fff7190fe36 libsystem_kernel.dylib`semaphore_wait_trap + 10
    frame #1: 0x00007fff6b3a8b16 caulk`caulk::mach::semaphore::wait() + 16
    frame #2: 0x00007fff6b3a89b2 caulk`caulk::semaphore::timed_wait(double) + 106
    frame #3: 0x00007fff6b3a87c4 caulk`caulk::concurrent::details::worker_thread::run() + 30
    frame #4: 0x00007fff6b3a81e4 caulk`void* caulk::thread_proxy<std::__1::tuple<caulk::thread::attributes, void (caulk::concurrent::details::worker_thread::*)(), std::__1::tuple<caulk::concurrent::details::worker_thread*> > >(void*) + 45
    frame #5: 0x0000000100da7c65 libsystem_pthread.dylib`_pthread_start + 148
    frame #6: 0x0000000100da34af libsystem_pthread.dylib`thread_start + 15
  thread #30
    frame #0: 0x00007fff719163d6 libsystem_kernel.dylib`poll + 10
    frame #1: 0x0000000100dcc950 util`ssb::poll_t::loop() + 234
    frame #2: 0x0000000100dd0f1a util`ssb::thread_base_t::thread_routine(void*) + 14
    frame #3: 0x0000000100da7c65 libsystem_pthread.dylib`_pthread_start + 148
    frame #4: 0x0000000100da34af libsystem_pthread.dylib`thread_start + 15
  thread #31
    frame #0: 0x00007fff719163d6 libsystem_kernel.dylib`poll + 10
    frame #1: 0x0000000100dcc950 util`ssb::poll_t::loop() + 234
    frame #2: 0x0000000100dd0f1a util`ssb::thread_base_t::thread_routine(void*) + 14
    frame #3: 0x0000000100da7c65 libsystem_pthread.dylib`_pthread_start + 148
    frame #4: 0x0000000100da34af libsystem_pthread.dylib`thread_start + 15
  thread #32
    frame #0: 0x00007fff719163d6 libsystem_kernel.dylib`poll + 10
    frame #1: 0x0000000100dcc950 util`ssb::poll_t::loop() + 234
    frame #2: 0x0000000100dd0f1a util`ssb::thread_base_t::thread_routine(void*) + 14
    frame #3: 0x0000000100da7c65 libsystem_pthread.dylib`_pthread_start + 148
    frame #4: 0x0000000100da34af libsystem_pthread.dylib`thread_start + 15
  thread #40
    frame #0: 0x00007fff719163d6 libsystem_kernel.dylib`poll + 10
    frame #1: 0x0000000100dcc950 util`ssb::poll_t::loop() + 234
    frame #2: 0x0000000100dd0f1a util`ssb::thread_base_t::thread_routine(void*) + 14
    frame #3: 0x0000000100da7c65 libsystem_pthread.dylib`_pthread_start + 148
    frame #4: 0x0000000100da34af libsystem_pthread.dylib`thread_start + 15
  thread #41
    frame #0: 0x00007fff719163d6 libsystem_kernel.dylib`poll + 10
    frame #1: 0x0000000100dcc950 util`ssb::poll_t::loop() + 234
    frame #2: 0x0000000100dd0f1a util`ssb::thread_base_t::thread_routine(void*) + 14
    frame #3: 0x0000000100da7c65 libsystem_pthread.dylib`_pthread_start + 148
    frame #4: 0x0000000100da34af libsystem_pthread.dylib`thread_start + 15
  thread #42
    frame #0: 0x00007fff71912882 libsystem_kernel.dylib`__psynch_cvwait + 10
    frame #1: 0x0000000100da7f81 libsystem_pthread.dylib`_pthread_cond_wait + 698
    frame #2: 0x000000010c894ecf viper`___lldb_unnamed_symbol1405$$viper + 239
    frame #3: 0x000000010c928853 viper`___lldb_unnamed_symbol3938$$viper + 195
    frame #4: 0x000000010c89569f viper`___lldb_unnamed_symbol1423$$viper + 47
    frame #5: 0x0000000100da7c65 libsystem_pthread.dylib`_pthread_start + 148
    frame #6: 0x0000000100da34af libsystem_pthread.dylib`thread_start + 15
  thread #43
    frame #0: 0x00007fff71912882 libsystem_kernel.dylib`__psynch_cvwait + 10
    frame #1: 0x0000000100da7f81 libsystem_pthread.dylib`_pthread_cond_wait + 698
    frame #2: 0x000000010c6cd29e nydus`___lldb_unnamed_symbol3579$$nydus + 2472
    frame #3: 0x000000010c68b8fc nydus`___lldb_unnamed_symbol1999$$nydus + 14
    frame #4: 0x0000000100da7c65 libsystem_pthread.dylib`_pthread_start + 148
    frame #5: 0x0000000100da34af libsystem_pthread.dylib`thread_start + 15
  thread #44
    frame #0: 0x00007fff7190fdfa libsystem_kernel.dylib`mach_msg_trap + 10
    frame #1: 0x00007fff71910170 libsystem_kernel.dylib`mach_msg + 60
    frame #2: 0x00007fff378870b5 CoreFoundation`__CFRunLoopServiceMachPort + 247
    frame #3: 0x00007fff37885b82 CoreFoundation`__CFRunLoopRun + 1319
    frame #4: 0x00007fff37884ffe CoreFoundation`CFRunLoopRunSpecific + 462
    frame #5: 0x000000010c69dbb4 nydus`___lldb_unnamed_symbol2350$$nydus + 120
    frame #6: 0x000000010c68b8fc nydus`___lldb_unnamed_symbol1999$$nydus + 14
    frame #7: 0x0000000100da7c65 libsystem_pthread.dylib`_pthread_start + 148
    frame #8: 0x0000000100da34af libsystem_pthread.dylib`thread_start + 15
  thread #45
    frame #0: 0x00007fff71912882 libsystem_kernel.dylib`__psynch_cvwait + 10
    frame #1: 0x0000000100da7f81 libsystem_pthread.dylib`_pthread_cond_wait + 698
    frame #2: 0x000000010c6aebf3 nydus`___lldb_unnamed_symbol2886$$nydus + 917
    frame #3: 0x000000010c68b8fc nydus`___lldb_unnamed_symbol1999$$nydus + 14
    frame #4: 0x0000000100da7c65 libsystem_pthread.dylib`_pthread_start + 148
    frame #5: 0x0000000100da34af libsystem_pthread.dylib`thread_start + 15
  thread #46
    frame #0: 0x00007fff71912882 libsystem_kernel.dylib`__psynch_cvwait + 10
    frame #1: 0x0000000100da7f81 libsystem_pthread.dylib`_pthread_cond_wait + 698
    frame #2: 0x000000010c6aebf3 nydus`___lldb_unnamed_symbol2886$$nydus + 917
    frame #3: 0x000000010c68b8fc nydus`___lldb_unnamed_symbol1999$$nydus + 14
    frame #4: 0x0000000100da7c65 libsystem_pthread.dylib`_pthread_start + 148
    frame #5: 0x0000000100da34af libsystem_pthread.dylib`thread_start + 15
  thread #47
    frame #0: 0x00007fff7190fe4e libsystem_kernel.dylib`semaphore_timedwait_trap + 10
    frame #1: 0x000000010c885637 viper`___lldb_unnamed_symbol1164$$viper + 167
    frame #2: 0x000000010c877865 viper`___lldb_unnamed_symbol1043$$viper + 21
    frame #3: 0x000000010c89569f viper`___lldb_unnamed_symbol1423$$viper + 47
    frame #4: 0x0000000100da7c65 libsystem_pthread.dylib`_pthread_start + 148
    frame #5: 0x0000000100da34af libsystem_pthread.dylib`thread_start + 15
  thread #48, name = 'com.apple.audio.IOThread.client'
    frame #0: 0x00007fff7190fdfa libsystem_kernel.dylib`mach_msg_trap + 10
    frame #1: 0x00007fff71910170 libsystem_kernel.dylib`mach_msg + 60
    frame #2: 0x00007fff36f6fc75 CoreAudio`HALB_MachPort::SendSimpleMessageWithSimpleReply(unsigned int, unsigned int, int, int&, bool, unsigned int) + 111
    frame #3: 0x00007fff36e6bf18 CoreAudio`___ZN19HALC_ProxyIOContextC2Ejj_block_invoke + 2677
    frame #4: 0x00007fff36f9fc22 CoreAudio`HALB_IOThread::Entry(void*) + 72
    frame #5: 0x0000000100da7c65 libsystem_pthread.dylib`_pthread_start + 148
    frame #6: 0x0000000100da34af libsystem_pthread.dylib`thread_start + 15
  thread #49
    frame #0: 0x00007fff7190fe4e libsystem_kernel.dylib`semaphore_timedwait_trap + 10
    frame #1: 0x000000010c884e25 viper`___lldb_unnamed_symbol1163$$viper + 165
    frame #2: 0x000000010c877845 viper`___lldb_unnamed_symbol1042$$viper + 21
    frame #3: 0x000000010c89569f viper`___lldb_unnamed_symbol1423$$viper + 47
    frame #4: 0x0000000100da7c65 libsystem_pthread.dylib`_pthread_start + 148
    frame #5: 0x0000000100da34af libsystem_pthread.dylib`thread_start + 15
  thread #50, name = 'com.apple.audio.IOThread.client'
    frame #0: 0x00007fff7190fdfa libsystem_kernel.dylib`mach_msg_trap + 10
    frame #1: 0x00007fff71910170 libsystem_kernel.dylib`mach_msg + 60
    frame #2: 0x00007fff36f6fc75 CoreAudio`HALB_MachPort::SendSimpleMessageWithSimpleReply(unsigned int, unsigned int, int, int&, bool, unsigned int) + 111
    frame #3: 0x00007fff36e6bf18 CoreAudio`___ZN19HALC_ProxyIOContextC2Ejj_block_invoke + 2677
    frame #4: 0x00007fff36f9fc22 CoreAudio`HALB_IOThread::Entry(void*) + 72
    frame #5: 0x0000000100da7c65 libsystem_pthread.dylib`_pthread_start + 148
    frame #6: 0x0000000100da34af libsystem_pthread.dylib`thread_start + 15
  thread #51
    frame #0: 0x00007fff71912756 libsystem_kernel.dylib`__semwait_signal + 10
    frame #1: 0x00007fff71895eea libsystem_c.dylib`nanosleep + 196
    frame #2: 0x00007fff71895de4 libsystem_c.dylib`usleep + 53
    frame #3: 0x00007fff38b27b03 CoreMediaIO`CMIOGraph::OneOrMoreInputUnitsAreReadyToBePulled(bool&) + 635
    frame #4: 0x00007fff38b28565 CoreMediaIO`CMIOGraph::DoWork(unsigned int) + 413
    frame #5: 0x00007fff38b2ada7 CoreMediaIO`CMIO::Thread::QueuedTWorkThread<unsigned int>::DoWork() + 123
    frame #6: 0x00007fff38b32458 CoreMediaIO`CMIO::Thread::SignaledThread::ThreadLoop() + 144
    frame #7: 0x00007fff38b323b3 CoreMediaIO`CMIO::Thread::SignaledThread::WorkQueuedThreadCallback(void*) + 53
    frame #8: 0x00007fff38a42503 CoreMedia`figThreadMain + 276
    frame #9: 0x0000000100da7c65 libsystem_pthread.dylib`_pthread_start + 148
    frame #10: 0x0000000100da34af libsystem_pthread.dylib`thread_start + 15
  thread #52
    frame #0: 0x00007fff7190fdfa libsystem_kernel.dylib`mach_msg_trap + 10
    frame #1: 0x00007fff71910170 libsystem_kernel.dylib`mach_msg + 60
    frame #2: 0x00007fff378870b5 CoreFoundation`__CFRunLoopServiceMachPort + 247
    frame #3: 0x00007fff37885b82 CoreFoundation`__CFRunLoopRun + 1319
    frame #4: 0x00007fff37884ffe CoreFoundation`CFRunLoopRunSpecific + 462
    frame #5: 0x00007fff3790d639 CoreFoundation`CFRunLoopRun + 40
    frame #6: 0x00000001102b3de8 AppleCamera`___lldb_unnamed_symbol313$$AppleCamera + 98
    frame #7: 0x0000000100da7c65 libsystem_pthread.dylib`_pthread_start + 148
    frame #8: 0x0000000100da34af libsystem_pthread.dylib`thread_start + 15
  thread #53
    frame #0: 0x00007fff71912062 libsystem_kernel.dylib`__psynch_mutexwait + 10
    frame #1: 0x0000000100da5398 libsystem_pthread.dylib`_pthread_mutex_firstfit_lock_wait + 101
    frame #2: 0x0000000100da31d8 libsystem_pthread.dylib`_pthread_mutex_firstfit_lock_slow + 225
    frame #3: 0x00007fff423821a8 OpenGL`CGLSetParameter + 107
    frame #4: 0x00007fff34ea7eec AppKit`-[NSOpenGLContext setValues:forParameter:] + 22
    frame #5: 0x000000010c6f6ad4 nydus`___lldb_unnamed_symbol5219$$nydus + 73
    frame #6: 0x000000010c67b1c8 nydus`___lldb_unnamed_symbol1583$$nydus + 174
    frame #7: 0x000000010c6a4198 nydus`___lldb_unnamed_symbol2516$$nydus + 68
    frame #8: 0x000000010c6a4651 nydus`___lldb_unnamed_symbol2533$$nydus + 13
    frame #9: 0x000000010c6af5ee nydus`___lldb_unnamed_symbol2887$$nydus + 62
    frame #10: 0x000000010c7306bd nydus`___lldb_unnamed_symbol6988$$nydus + 235
    frame #11: 0x000000010c730d81 nydus`___lldb_unnamed_symbol7001$$nydus + 13
    frame #12: 0x000000010c6af5ee nydus`___lldb_unnamed_symbol2887$$nydus + 62
    frame #13: 0x000000010c73981e nydus`___lldb_unnamed_symbol7375$$nydus + 124
    frame #14: 0x000000010c68b8fc nydus`___lldb_unnamed_symbol1999$$nydus + 14
    frame #15: 0x0000000100da7c65 libsystem_pthread.dylib`_pthread_start + 148
    frame #16: 0x0000000100da34af libsystem_pthread.dylib`thread_start + 15
  thread #54
    frame #0: 0x00007fff71912882 libsystem_kernel.dylib`__psynch_cvwait + 10
    frame #1: 0x0000000100da7f81 libsystem_pthread.dylib`_pthread_cond_wait + 698
    frame #2: 0x0000000110b2b843 zlt`___lldb_unnamed_symbol139$$zlt + 9
    frame #3: 0x0000000110b2be59 zlt`___lldb_unnamed_symbol153$$zlt + 177
    frame #4: 0x0000000100da7c65 libsystem_pthread.dylib`_pthread_start + 148
    frame #5: 0x0000000100da34af libsystem_pthread.dylib`thread_start + 15
  thread #55
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    frame #3: 0x0000000110b2be59 zlt`___lldb_unnamed_symbol153$$zlt + 177
    frame #4: 0x0000000100da7c65 libsystem_pthread.dylib`_pthread_start + 148
    frame #5: 0x0000000100da34af libsystem_pthread.dylib`thread_start + 15
  thread #57
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  thread #61
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  thread #62
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Hi dmytro,

Thanks for the post. What is the Xcode version you are using? Could you provide the SDK log for us to further investigate? You may find the log in ~/Library/Logs/(appName).

Thanks!

Hi @Carson_Chen,

Xcode 10.3
Here is a log file

Thanks!

Here are two more cases, hope that helps.


Hi dmytro,

Thanks for the reply and for providing the logs. We have analyzed the log Livekick.app_3.log, and everything seems working fine. We have tried to reproduce this with our demo app but no luck.

I saw you just provided another 2 logs, I will forward that to the engineering team for further investigation and get back to you shortly.

One suggestion at the moment that could possibly be helpful is using Xcode 10.0 to build the app.

Thanks!