Plugin and it's window with plug controls goes independently

My problem is that plugins windows (SSL) and WL7 plugins windows (with plugin controls) goes separately of each other. Graphic of plugin always stays on left side (can’t move) and white/blank WL7 window with plugin controls can move.
There is an attachment for better understanding this issue.

What is the reason?

I have deleted cache folder and nothing changed

MAC PRO 2011
OSX 10.6.8


with latest WaveLab 7.2.1 ?

regards S-EH

Yes, WaveLab 7.2.1 (build 600) - 32 bit