Dialog box options makes a giant blank rectangle appear

When I left or right click on the options icon for the dialog boxes that I have mounted on the right side of my viewport, a giant blank rectangle fills up most of my screen, but no options appear. The giant rectangle covers both of my monitors. Not a new problem.

If I click outside of the rectangle, it goes away after a moment.

Version 6 SR13
(6.13.19035.17431, 2/4/2019)

Hi Peter - a shot in the dark, I am not sure it even applies to the panels, but try



Nope - doesn’t help.

@andy - do you have an idea about this?