WKWebview textarea放大-缩小迅速导致应用程序崩溃。从Scheme启用了Zombie，显示错误-[UIInput View Placement Transition animationState]：消息发送到已释放实例。仪器僵尸显示以下消息。仍然无法检测到该问题，
Malloc/Autorelease/Retain/Release (7) 02:07.429.169 UIKit +[UIInputViewPlacementTransition transitionFromPlacement:toPlacement:withAnimationStyle:]
0 Malloc +1 1 02:07.429.169 UIKit +[UIInputViewPlacementTransition transitionFromPlacement:toPlacement:withAnimationStyle:]
1 Autorelease 02:07.429.173 UIKit -[UIInputWindowController setInputViewSet:]
3 Retain +1 3 02:07.449.415 UIKit +[UIViewAnimationBlockDelegate animationBlockDelegateWithDuration:options:start:completion:]
4 Retain +1 4 02:07.449.418 UIKit __copy_helper_block_.1063
5 Release -1 3 02:07.598.602 UIKit __handleEventQueueInternal
7 Release -1 1 02:08.169.248 UIKit __destroy_helper_block_.1064
8 Release -1 0 02:08.169.326 Foundation -[NSRunLoop(NSRunLoop) runMode:beforeDate:]
Retain/Release (2) 02:07.448.055 UIKit -[UIInputWindowController setInputViewSet:]
9 Zombie -1 02:08.364.478 UIKit -[UIInputWindowController mergeTransitionIfNecessaryWithTransition:]