我有一个关于QuartzCore的崩溃报告，似乎仅在iOS 12上发生过。它在com.apple.coremedia.player.async上崩溃了。
我在Apple Developer Forums上找到了几份类似的报告，但是还没有提供解决方案。
这是完整的堆栈跟踪记录（iOS 12.0.1）：
Crashed: com.apple.coremedia.player.async.0x283b5c240
0 QuartzCore 0x18f8ad578 X::Ref<CA::Shape>::operator=(CA::Shape*) + 20
1 QuartzCore 0x18f8ad434 CABackingStoreGetFrontTexture(CABackingStore*, CGColorSpace*) + 348
2 QuartzCore 0x18f8ad2a8 CABackingStoreRetainFrontTexture + 48
3 QuartzCore 0x18f9d4e54 -[CALayer(CALayerPrivate) _copyRenderLayer:layerFlags:commitFlags:] + 676
4 QuartzCore 0x18f9da9e4 CA::Layer::commit_if_needed(CA::Transaction*, void (*)(CA::Layer*, unsigned int, unsigned int, void*), void*) + 448
5 QuartzCore 0x18f9da928 CA::Layer::commit_if_needed(CA::Transaction*, void (*)(CA::Layer*, unsigned int, unsigned int, void*), void*) + 260
6 QuartzCore 0x18f9da928 CA::Layer::commit_if_needed(CA::Transaction*, void (*)(CA::Layer*, unsigned int, unsigned int, void*), void*) + 260
7 QuartzCore 0x18f9da928 CA::Layer::commit_if_needed(CA::Transaction*, void (*)(CA::Layer*, unsigned int, unsigned int, void*), void*) + 260
8 QuartzCore 0x18f9da928 CA::Layer::commit_if_needed(CA::Transaction*, void (*)(CA::Layer*, unsigned int, unsigned int, void*), void*) + 260
9 QuartzCore 0x18f9da928 CA::Layer::commit_if_needed(CA::Transaction*, void (*)(CA::Layer*, unsigned int, unsigned int, void*), void*) + 260
10 QuartzCore 0x18f9da928 CA::Layer::commit_if_needed(CA::Transaction*, void (*)(CA::Layer*, unsigned int, unsigned int, void*), void*) + 260
11 QuartzCore 0x18f9da928 CA::Layer::commit_if_needed(CA::Transaction*, void (*)(CA::Layer*, unsigned int, unsigned int, void*), void*) + 260
12 QuartzCore 0x18f9da928 CA::Layer::commit_if_needed(CA::Transaction*, void (*)(CA::Layer*, unsigned int, unsigned int, void*), void*) + 260
13 QuartzCore 0x18f92e528 CA::Context::commit_transaction(CA::Transaction*) + 3240
14 QuartzCore 0x18f95c2f4 CA::Transaction::commit() + 608
15 MediaToolbox 0x18fe4d300 remoteXPCPlayer_setClientVideoLayerArray + 1284
16 MediaToolbox 0x18fe4c598 remoteXPCPlayer_SetProperty + 340
17 MediaToolbox 0x18fdb362c playerasync_runOneCommand + 1876
18 MediaToolbox 0x18fdb63d0 playerasync_runAsynchronousCommandOnQueue + 172
19 libdispatch.dylib 0x18ae20484 _dispatch_client_callout + 16
20 libdispatch.dylib 0x18adc7c18 _dispatch_lane_serial_drain$VARIANT$mp + 592
21 libdispatch.dylib 0x18adc8794 _dispatch_lane_invoke$VARIANT$mp + 484
22 libdispatch.dylib 0x18adcfa60 _dispatch_root_queue_drain + 376
23 libdispatch.dylib 0x18adcf7e0 _dispatch_worker_thread + 284
24 libsystem_pthread.dylib 0x18b0012fc _pthread_body + 128
25 libsystem_pthread.dylib 0x18b00125c _pthread_start + 48
26 libsystem_pthread.dylib 0x18b004d08 thread_start + 4
我绝对不知道它可能来自哪里。崩溃日志表明它可能来自视频，并且我的应用程序包含一个Youtube Player，因此可能相关。
有人有想法吗？请告诉我是否需要其他信息。