Problem,Paper2d ,Player Pawn(Sprite) move by hit

Hello,i m new to UDK4 and i test me on a Breakout Clone (Paper2d ).

For the Player Paddle i use a Pawn Blueprint ,with a Paper Sprite and a Floating Pawn Movement Component.
Now when the Ball hit the Paddel on the Edges he fall down a little or move a little up .

I have make a Video from this.:
Maybe anyone can help me.


A have found a Solution:

In my PlayerPawn Blueprint in the Floatingmovement component, go to Planar Movement ,click Constrain to Plane and i must set the Axis to Z.
Now it works.

Check out my brick breaker template it may help you