Boat resumes previous rotation speed after remounting, even though it stops spinning when dismounted

Steps to Reproduce:

Place a boat on any surface (land, ice or water).

Enter the boat and continuously turn in place to build rotational momentum.

Disembark from the boat.

Enter the boat again.

Observed Result:

The boat stops rotating right after dismounting. Once the player boards again, the boat restarts spinning with its former rotation speed.

Expected Result:

The boat loses all rotational momentum after the player disembarks; it should not resume spinning after remounting.