Zombies getting stuck when chasing you?

[morgoe]

I didn't notice this in the Amnesia game, but in my custom maps, the zombies keep getting stuck on door frames, on stairs, basically anywhere that's not a linear A->B. If I come back to him and lead him around he's fine, but obviously that's not something I want. What's going on? It's a survival map so I need the zombie to chase you everywhere, not just on a set path.

Also, is there a way to move the zombie to a diff place? I haven't found it in the Script Functions.