Random Gray Box On Desktop
Hi. I have a MacBook Pro retina mid 2013 running Big Sur. Recently I keep having a light gray box with two lines appearing on my desktop randomly. It has a shorter line on top and a longer line at the bottom. It is a 2 inch square and sits about 2 inches on top of the dock. Can anyone help me with this ?
Many thanks.
Simon
MacBook Pro 13″, macOS 11.1