Warning frame for “Navigation bar” will be different at run time appears in Xcode 8 Swift 3

Question

Before I\'ve upgraded to Xcode 8 I haven\'t seen this error in such case. I have different Navigation Controllers. For all of them I see an error Frame fo

Answer 1

Please change your device Preview in xcode for View controller and compile and check for warnings...

Xcode 8 is bit buggy, Interface builder reset its with random no which affects all contained views. Try changing your preview device.