When using the editor to customize vehicle positions pressing numpad 5 doesn't do anything. In the past (and according to the documentation) this should reset the currently selected object to its default position.
Another thing I noticed is how rotating objects left/right is really slow and I can't remember this from previous versions either. Is there any way to make the rotation a bit faster? Right now it takes almost 30 seconds to move an object 45 degrees making it a pain to rotate objects.