I have a MacBook Pro (Retina, 13-inch, Early 2015) running High Sierra 10.13.3.
Recently when I have dragged and deleted image files from my desktop there has been a thumbnail of one of the pictures deleted left floating on the screen, it seems to be on a layer above anything else and the only way I can get rid of it is restarting my laptop.
Anyone else experienced this/found a fix?