Steps to Reproduce:

1. Create a new world with the "Multiplayer Game" and "Visible to LAN players" options enabled
2. Place a boat on water
3. Use a second device with a different Microsoft account to join the world
4. Enter the boat on both devices
5. While looking at the passenger's screen, turn the boat

Observed Results:
The passenger's camera snaps to the side.

Expected Results:
The passenger's camera should face the direction the boat is facing.

Video:
Minecraft 2021-12-31 16-18-46.mp4