I had a bug arise with the redraw on my Inspector in FileMaker Pro Advanced 126.96.36.199 yesterday. I am not sure what activity led to this, but I do have a dual monitor set up and the inspector was on my second screen for a few hours and then I moved it back to my main monitor. At some point the redraw went bad and resulted in the following:
I tried closing the Inspector, closing the File that I was working on and the Inspector remained unchanged. This was only fixed by quitting and reopening FileMaker.