I also have this issue, one of the things I noticed was that in my second monitor is where the issue for the saturation knob is, if I insert it on the main monitor it works and shows up correctly but if I open screenset #5/7 where I can put the console on a different monitor (my preferred view) the insert whites out or defaults to a different plug-in icon...
I suspect in my case it is related to using two monitors with different resolutions, except that it is only the saturation knob that has the glitch...
By the way I have reset, rescanned, held down shift on start-up, changed migration settings in registry as infinitum...and the problem persists...