Summary: I am attempting to use self-sizing cells on iOS 12 / Xcode 10. Unfortunately, they are not working as expected.
Steps to Reproduce: Run attached project on iOS 12. Run attached project on iOS 11.
Expected Results: The cells should be 1/3 of the screen width.
Actual Results: On iOS 11, the cells are 1/3 of the screen width. On iOS 12, they are the width of their prototype cell.
Version/Build: Xcode 10 beta 6, iOS 12 beta 7
Base project attached at rdar://43260298
