[0.13.8] Biter gets stuck on wall

[Kirk]

Another one of these, I'm afraid. If you load the attached save I presume you will find this situation.

It was like this when I arrived, I don't know what went on there before that. Presumably it killed the other turret and is now trying to kill this one, which ran out of ammo. Maybe it has to do with the fact that red biters can attack over walls now?

[Oxyd]

Fixed in 0.13.9.