After crash recovery files can not delete files

After a crash / recovery I cannot delete files.
The message is:
“the action cannot be completed because the file is open in libre office”
I’ve checked permissions and security settings and cleared RO Attr.
There are no hanging lockfiles and no files are open in LO.
I’ve opened saved and closed the files but no can delete.
Win1021h2 - LO 7.2.4.1
thanks

OK, A reboot cleared whatever got locked in LO/Filesystem.
It is probably someone’s bug, I wouldn’t venture a guess as who.