“Plain Style unsupported in a Navigation Item” warning with my customized Bar Button Item

Question

I drag a Round Rect Button to the position of the right Bar Button Item, and set an image to the Round Rect Button. All works well, except the warning \"Plain Style unsuppor

Answer 1

After you are sure that you have all your bar buttons in the storyboard set to anything but plain, make sure you do a git commit and delete derived data. I spent forever trying to figure out why the problem wasn't fixing itself, and deleting the derived data folder fixed it for me.