Don't know if you solved this problem, it just appeared to me, and I'm using Ontap 9.3.
Deleted a file from a share, after pressing F5, it's back. Can't rename, can't move, it's corrupted but it's back.
Only way I found to kill it for good was breaking it's lock by hand in the Ontap CLI, but still I don't know what caused the problem in first place. I've read somewhere that using the preview pane in Windows Explorer could cause it, but I didn't try to replicate it.