To be fair, that's a similar bug to what Dwarf Fortress had until recently: unless you built walls from certain directions, your dwarves would end up on the "wrong side." And you can't say Dwarf Fortress doesn't have stupid bugs; a recent fort had a were-elephant scared up into a tree. He couldn't climb down, being an elephant, but inflicted terror on anyone who dared approach, including a lumberjack instructed to chop the tree down. In fact, the stupid bugs make the game amusing [and frustrating] [and !FUN!].