Steps to reproduce:

1. Open new Unity project
2. Switch to tvOS
3. Open 'Player Settings' and go to 'Icon' tab
4. Click the '+' in the small or large icon layers section a few times

Expected behaviour: You should only be able to add up to 5 layers, as that is one of the rules of Apple TV guidelines.
Actual behaviour: You can add as many as you want and assign images to them. However, all the images after 5th layer are ignored in final Xcode project.