Thx, for the feedback.
Yeah, the package size ... it was late xD
And your right, we talked about countdown/ease-in period, but just hadn't time for it anymore. The odd behavior is a result from the cube shifting position, because it doesn't hit the middle of the paddles, because of it's size. We started to fix this, but again time. If we will do a final version, the cube will always stay in the middle of the paddle, which should make the game feel way smoother.