Doorway update, added knobs, affected several files, zip updated too. Much more work to be done to "standardize" operation.
Actual my solution is also not good. Because it only works with two actuators.
But also the original version is working wrong. Because the movement speed is different if the left and forward speed is different. So the character moves with the speed which actuator was activated first. So if you activate first forward and then left, the movement speed is different to when you activate first left and then forward.
It does not fix the problem with T42708. That is a Bullet bug, because Bullet reruns also true for OnGround() when the character hits the celling.