I have a problem in that for some reason, the game doesn't register my use of the "Alt" key, neither for bringing up the Debug menu or to duplicate parts in the editor. I have checked, and the key works fine on my other pc or when I'm out of the game.
The functions of that key don't seem to be listed in the rebind section of the options menu, so I don't know how to rebind it.
I'm running the linux version on SteamOS.
Please let me know what to do here