Camel sits down while riding an entity such as minecart/boat

The camel tries to sit down while riding an entity such as minecart/boat, which the animation should not play in that situation.

How to Reproduce
1. Place a rail and a minecart.
2. Spawn a camel next or on top of a minecart.
3. Wait until camel sits down.

Observed Result
The camel sits down while riding on a minecart/boat.

Expected Result
The camel shouldn't be able to sit down while riding on a minecart/boat.