I'm not trying to drag and drop to an invalid location. I'm just trying to drag files from one folder to another within the same path. Nothing crazy.
I tap and drag the files, move to the destination directory and the folder opens like I've been hovering over it. I lift my finger from the trackpad like I've been doing for years, and nothing happens. The files remain stuck to the cursor. I move it around and they won't drop anywhere. I even hover over the source directory and they won't drop. They ONLY way I can get them to drop is to hold ESC while tapping again - found that thru massive trial and error.
This just started today and NO, a reboot does not help. Any clues??