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 for "Navigation bar" will be different at the run time. Navigation bar "Expected: width=384, Actual: width=375
. In reality these Navigation Controllers doesn't have Navigation bar
. Navigation bar
exists for subviews. Anyway I could solve it by tick and untick the checkbox Shows navigation bar
in Attributes inspector
. But unfortunately every time I reopen Main.storyboard
this warning appears again. Also if I click on yellow triangle and then on update frames nothing happen.
Warning will disappear if you change the property "Simulated Size" to "Freeform".