Mooshrooms take damage when jump in enclosed space

Mooshrooms take damage when trying to jump in enclosed space. Damage is dealt when the mooshroom headbutts the roof. It's probably suffocation damage. Bug also affects cows.

To reproduce:
1.Build a place similiar to this on the image.
2.Spawn mooshrooms
3.Mooshrooms must hit the roof blocks when they're trying to jump
4.Mooshrooms will take damage