![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
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/Pw1q5.png)
swift - Getting a "This application is modifying the autolayout engine from a background thread" error? - Stack Overflow
![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)
Problem when animating a UIView to scale to zero using CGAffineTransform on iOS | by Sarthak Tayade | Medium
![UITextField.textAlignment must be used from main thread only” Can't reset TextRows in iOS 11 xcode 9.1 · Issue #1351 · xmartlabs/Eureka · GitHub UITextField.textAlignment must be used from main thread only” Can't reset TextRows in iOS 11 xcode 9.1 · Issue #1351 · xmartlabs/Eureka · GitHub](https://user-images.githubusercontent.com/31646541/33939410-18fc3fec-e031-11e7-9877-8fdd1188e7e7.png)
UITextField.textAlignment must be used from main thread only” Can't reset TextRows in iOS 11 xcode 9.1 · Issue #1351 · xmartlabs/Eureka · 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/wK4BS.png)
swift - Getting a "This application is modifying the autolayout engine from a background thread" error? - Stack Overflow
![【Xcode/Swift】紫の警告の対応方法:UIApplication.registerForRemoteNotifications() must be used from main thread only 【Xcode/Swift】紫の警告の対応方法:UIApplication.registerForRemoteNotifications() must be used from main thread only](https://i0.wp.com/ios-docs.dev/wp-content/uploads/2021/11/purple_error.jpg?fit=880%2C524&ssl=1)