Rovers, Ground Vehicle Bugs

1) When launching or continuing game, some ground vehicles jump up and flip over sideways at zero velocity and without any input (as depicted in picture)

2) If locking a heading, using the nav sphere, ground vehicles engage motors at 100% and are impossible to steer or control due to the speed, usually flip over head over end

3) With rovers with movable parts such as arms, when the arm presses against main rover body or rover parts, it imparts a rotating moment and flips the rover over or sideways, in other words the moment imparted by the rover's arm on itself acts as a thrust or impact, and the rover will continue tumbling in the air uncontrollably. This means when using rovers with arms, any touch by the arm to the rover could destroy the rover.