What I expected to happen was...:
In hardcore selection, I expected the Allow Cheats and Bonus Chest to stay greyed out when going into submenus and returning.

What actually happened was...:
Changing the World Type to Customized, Pressing Customize, a submenu appears. Pressing done returns to the parent menu, but Allow Cheats and Bonus Chest buttons are not greyed out, but still do not activate when clicked.

Steps to Reproduce:
Open Minecraft 1.8.1 (Public version of 1/3/15)
Launch Player
Single Player
Create New World
Hardcore
More World Options
World Type: Customized
Customize
Done