Okay, so I have a building that can be built anywhere (doesn't require tile buildability). I did this because it's a barricade, and I made every tile but a certain one unbuildable so I could limit building to certain spots.
In-editor, my barricade sets up fine. However, in-game, you can build 100 barricades directly on top of one another. Basically, it's as if the building has no pathing map (which it does have). | 
