I was leading chickens into a villager's house until i could build an enclosure for them so foxes wouldn't kill them. The chickens started jumping while in the doorway of the house and taking damage. They stopped taking damage the moment they were out of the doorway. A villager later pushed the chickens into the doorway and killed one with the doorway.

What I expected to happen was...:
A chicken should walk through/stand in a doorway without jumping, taking damage, or dying.

What actually happened was...:
All chickens lead through the doorway with seeds jumped within the door's location and started taking damage.

Steps to Reproduce:
1. Hold seeds near a chicken, attach a lead to, or push a chicken into a doorway with a block on top of the door.
2. The chicken will start jumping and taking damage as if suffocating while it's under the block/in the door.
3. If you don't move the chicken quickly, it will die.