Ah yes, seen that on servers.
From what I can tell, it was coded to spawn in a certain distance to the player, they don't have a collision, so regardless where they spawn, as long as it is that certain distance, they don't care. The fact they go into walls is because the creator did not bother to make a trace check for walls/floors/ceilings I assume, so unless you don't recode it (for which one should at least have the permission of the creator for respect reasons), they will continue to do so. (And in case you get at recoding them, make sure to rename them to PostalBabesFixed1 or something like that to avoid any version mismatches)

So seen from that perspective, it is less of a bug but more of "lazy coding" (which is not to be blamed, considering that one would have to write more code that way just so that this doesn't happen - at least I understand the creator in that aspect, I would probably feel too "lazy" to do that too, lol).