In our app, we got the following crashes that occurs only on iOS 11. In iOS 11, whether there was a system bug that cause the following crash? Our app support iOS 9 and later. Fatal Exception: NSRangeException** -[NSArray initWithArray:range:copyItems:]: range {0, 2} extends beyond bounds [0 .. 0] 0	CoreFoundation								 0x184622d8c __exceptionPreprocess 1	libobjc.A.dylib								0x1837dc5ec objc_exception_throw 2	CoreFoundation								 0x1845bb750 _CFArgv 3	CoreFoundation								 0x1844ef5a0 -[NSArray initWithArray:range:copyItems:] 4	UIKit													0x18e1b3a20 +[_UICanvas canvases] 5	UIKit													0x18e1b3958 +[_UIApplicationCanvas canvases] 6	UIKit													0x18e1b38bc +[_UIApplicationCanvas mostActiveCanvas] 7	UIKit													0x18e1b386c -[UIApplication isSuspended] 8	UIKit													0x18e4f4824 UpdateSystemSoundActiveStatus 9	UIKit													0x18e4f492c IsSystemSoundEnabled 10 UIKit													0x18e4f4760 UpdateSystemSoundActiveStatus 11 UIKit													0x18e3c57cc -[UIDevice _updateSystemSoundActiveStatus:] 12 CoreFoundation								 0x1845b4c3c CFNOTIFICATIONCENTER_IS_CALLING_OUT_TO_AN_OBSERVER 13 CoreFoundation								 0x1845b41b8 _CFXRegistrationPost 14 CoreFoundation								 0x1845b3f14 ___CFXNotificationPost_block_invoke 15 CoreFoundation								 0x18463184c -[_CFXNotificationRegistrar find:object:observer:enumerator:] 16 CoreFoundation								 0x1844eaf38 _CFXNotificationPost 17 Foundation										 0x184f5bbbc -[NSNotificationCenter postNotificationName:object:userInfo:] 18 XX												 0x1060748b4 +[UMConfigureCache setObject:forKey:] 19 XX												 0x10608439c +[UMBuildPayload updateImprint:] 20 XX												 0x106084d90 -[UMBuildPayload verifyResponseData:] 21 XX												 0x106071c68 -[UMNetworkWork postDataToServer:withFile:] 22 XX												 0x10607175c -[UMNetworkWork postDataWithFile:] 23 XX												 0x10607128c -[UMNetworkWork main] 24 Foundation										 0x184f8bcac -[__NSOperationInternal _start:] 25 Foundation										 0x18504c76c __NSOQSchedule_f 26 libdispatch.dylib							0x183f14ae4 _dispatch_client_callout 27 libdispatch.dylib							0x183f1cf18 _dispatch_continuation_pop$VARIANT$mp 28 libdispatch.dylib							0x183f1b850 _dispatch_async_redirect_invoke$VARIANT$mp 29 libdispatch.dylib							0x183f21d30 _dispatch_root_queue_drain 30 libdispatch.dylib							0x183f21a80 _dispatch_worker_thread3 31 libsystem_pthread.dylib				0x184247fac _pthread_wqthread 32 libsystem_pthread.dylib				0x184247b08 start_wqthread Also, I discover other crash like these: Crash [__NSArrayM getObjects:range:]: range {0, 3} extends beyond bounds [0 .. 1] - https://github.com/AppsFlyerSDK/AppsFlyerFramework/issues/59 ADBMobile.collectLifecycleData() crash randomly in application didFinishLaunchingWithOptions - https://github.com/Adobe-Marketing-Cloud/mobile-services/issues/255 [iOS SDK] UIKit non-main thread crash - https://github.com/Adobe-Marketing-Cloud/mobile-services/issues/283