Put the summary of the bug you're having here

What I expected to happen was...:
I think the minecart should stop when it leaves the track

What actually happened was...:
When multiple minecart are stacked, they don't stop and move until something stops them

Steps to Reproduce:
1. First place the right angle rail, so as to be able to place multiple stacked ore cars
2. You can push them out of orbit, and they keep moving
3. If it's an ordinary minecart, you can sit in it, and when you press the direction key, they will move in the opposite direction
4.They move according to the grass path
5.You can control them when it leaves orbit and stops