Some of my Waves plug-ins are displaying a distorted GUI when I use them in X3.  I have no problems with them in X2 and it's not specific to a certain plug-in (i.e. one plug-in will work fine on one track and the same plug-in will show a messed up GUI on another).  The plug-in still operates properly, it's just almost impossible to control because the interface is so distorted.  Any ideas on how to fix this?

I have seen a whiteout in the Waves GUI control when subsequently opening the GUI after the initial opening.

Have you installed the X3b update? Are you running the Waves plugins as vst2 or vst3? You might try doing a rescan on your plugins.

Please read this article
Waves doesnt support mixing VST2 and VST3 in the same project.
 

I have reported this to Waves also. When I had the Waves GUI whiteout, it was the only plugin in the project on 2 separate tracks. I am on X3b and it still does not draw. It initially opens and is usable. I close it and then reopen the plugin. The GUI never redraws. It is a complete whiteout.