I have a funky problem, after I redid my gui a little bit:

-When I resize my windows (for PiP), my unitframes (grid and pitbull) and some macaroon buttons are slightly moving (mostly to the left), and i have no idea why this might be the case?
-Has anybody an Idea what may cause this?

To clarify my situation a littlebit:
- all Windows are set in WoW to the resolution of 1280x960
- the size of the big window is 1280x960, the little ones are 640x480 and all are borderess.

I added images how the windows appear (and boxes in read and green) to illustrate the problem better:

WoW1 on Big-Window:



WoW1 on little Window: