The Skeletons hitbox isn't always working.

Some Skeletons have a broken hitbox!

What I expected to happen was...:
To hit the skeleton.

What actually happened was...:
It wasn't hitting the Skeleton, almost as if the skeleton didn't have a hitbox.

Steps to Reproduce:
1. Have a mob kill your character (I'm pretty sure it's supposed to be a Skeleton).
2. Respawn.
3. Try to hit a skeleton (NOTE: Not all skeletons have a broken hitbox.)!