![swift - Getting a "This application is modifying the autolayout engine from a background thread" error? - Stack Overflow swift - Getting a "This application is modifying the autolayout engine from a background thread" error? - Stack Overflow](https://i.stack.imgur.com/wK4BS.png)
swift - Getting a "This application is modifying the autolayout engine from a background thread" error? - Stack Overflow
Error shown: UIView.isHidden must be used from main thread only · Issue #5904 · mozilla-mobile/firefox-ios · GitHub
![swift - Getting a "This application is modifying the autolayout engine from a background thread" error? - Stack Overflow swift - Getting a "This application is modifying the autolayout engine from a background thread" error? - Stack Overflow](https://i.stack.imgur.com/bYqev.png)
swift - Getting a "This application is modifying the autolayout engine from a background thread" error? - Stack Overflow
![iOS 14 crash -- Fatal Exception: NSInternalInconsistencyException Modifications to the layout engine must not be performed from a background thread after it has been accessed from the main thread. · Issue #66647 · flutter/flutter · GitHub iOS 14 crash -- Fatal Exception: NSInternalInconsistencyException Modifications to the layout engine must not be performed from a background thread after it has been accessed from the main thread. · Issue #66647 · flutter/flutter · GitHub](https://user-images.githubusercontent.com/44207000/121319148-81563d00-c93e-11eb-8e14-986585c67442.png)
iOS 14 crash -- Fatal Exception: NSInternalInconsistencyException Modifications to the layout engine must not be performed from a background thread after it has been accessed from the main thread. · Issue #66647 · flutter/flutter · GitHub
![Problem when animating a UIView to scale to zero using CGAffineTransform on iOS | by Sarthak Tayade | Medium Problem when animating a UIView to scale to zero using CGAffineTransform on iOS | by Sarthak Tayade | Medium](https://miro.medium.com/max/544/1*339TVqGzeit0QIvHsziu7Q.gif)