Not sure what would cause that I need to check around but something to consider is putting a screenshot that doesn't show your serial number for the program
Will have to look there, I have had a heck of a time trying to recreate the error.
One thing I had noticed if you try to narrow the content menu on the left to allow your display window to be larger the graphics card will freak out. Try it and see what happens, something is certainly not right with that.