Machicolation holes are so big you can fall through. Other odd behaviors are getting stuck in/on one, and then high-jumping to death when trying to get free. Hole size looks ok in first-person view but they look huge in 3rd person view (attached).

Minimal fix would be treating them like solid ground.

Ideally the holes should be too small to fall through, but still see and shoot through. There seems to be some basic view/size differences between 1st and 3rd person view that might make this hard.