tgstation/-tg-station — pull request #4457 by Ikarrus (2014-08-16 02:10:58+00:00)
Title: Mobs will block false walls from closing

I observed a round where a player cheesed the AI Chamber during Malfunction by closing false walls on himself and using that as a shield against electrodes, lasers, and the cleaner fluid. This is to prevent that.