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!].
The difference is, for some reason DF bugs are amusing as hell. It's pretty freaking funny to imagine a were-elephant in a tree yelling at everything. I think part of it is that DF doesn't really have graphics. You have to imagine what's going on, which makes it pretty freaking funny. Also almost no bug doesn't have solution, and none really stop the game either- even with that tree you could probably tunnel under it and collapse it, which is again, funny as hell.
I'm not saying DF is free of bugs, but actual bugs in it are going to be fixed, so it's easier to ignore them. If you knew your dwarves are going to get stuck now, and in a month, and whenever you want to play, would it be still fun?
I have to disagree with this. I'm definitely going to have fun with a game with a known bug that's going to be fixed in a week. It can even be a crashing bug, or making some mechanics unavailable. I'm just going to avoid that area, because the game is still evolving.
The same bug that's never going to be fixed makes the game not fun at all for me.
