Minecarts still move when the time is frozen

What I expected to happen was...:
It should have not started moving.

What actually happened was...:
I used the command "/tick freeze" and then entered into the minecart, even though time was frozen, it still started moving (The new experimental minecarts by the way)

Steps to Reproduce:
1. Have experimental minecarts on
2. use "/tick freeze"
3. enter a minecart

4. it can still move

The Video:

https://drive.google.com/file/d/1KQDZR6caIi_iY7kLiBWVTnO49xk3TRUn/view?usp=drive_link