steps to reproduce

1. look at a zombie coming into a house, they wont enter via the door, they run 'through the wall' - this isnt clipping through their collision map though, the collision map is offset (if the map is only offset in 1 axis then some houses may appear to be 'alligned'

2. try placing a fireplace in a house with a chimney, the fireplace will float 1 meter to the side of the actual fireplace, I presume the fireplace allignment map is the same as the AI collision

steps to reproduce

1. look at a zombie coming into a house, they wont enter via the door, they run 'through the wall' - this isnt clipping through their collision map though, the collision map is offset (if the map is only offset in 1 axis then some houses may appear to be 'alligned'

2. try placing a fireplace in a house with a chimney, the fireplace will float 1 meter to the side of the actual fireplace, I presume the fireplace allignment map is the same as the AI collision