When AI tank drivers are on a slope they can get stuck in a reverse motion until they hit an object to flat ground to stop, they also don't stop in place when told to move to a slope instead saying "ready" and rolling down the hill until once again hitting something or flat ground.

They can also get stuck in reverse after turning on the spot and wiggle left and right while reversing constantly until stopped by an object, this is harder to reproduce but probably tied to the same issue.