I have a shadow stuck in the middle of my desktop. It looks like there was some sort of window that had been open, then closed, but the shadow remained. I've completely restarted Windows, but the shadow remains in the same spot. I've turned off shadows completely, still nothing. I can click on the border of the shadow and it'll pop to the top of other windows, but otherwise I can't interact with it. I attached a cropped image of my Desktop showing what I'm talking about. So far I haven't been able to find anyone else who has reported this issue before. I'm at a loss.