The Bug
When hitboxes are shown (F3 + B), cow's blue line that indicates the direction they're facing starts spinning while the boat is moving. The bug happens on any difficulty and gamemode, as well as on water or land.
Video
Cow hitbox spinning on moving boat
Reproduce
Put a cow in a boat
Press F3 + B
Ride in the boat and move
Observed Result
The blue line was spinning
Expected Result
The blue line wouldn't spin
I've done some further investigating regarding this problem and have discovered that this issue is not exclusive to cows. This can be reproduced with all entities.
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