A menu item from a context menu frequently remains displayed after a mouse click. For instance I have a display
that has the word 'Delete' on it. This display is on top of anything I type or try to read. That is why I had to put a carriage return after display above as I was unable to move anything so that the I could see what I was doing. The only way I have found to get rids of it is to reboot. Doesn't matter what program I am in. It happens when I click on a context menu item.