File deletion/lock issue with Firefox

[Free4all]

FreeCommander XE 2023 Build 898 64-bit donor (Win7)

I had 4 files in a folder. I uploaded 2 of them using Firefox to a web-app. In FC, I then pressed Shift+Del to permanently delete those files. FC appeared to perform the action (no errors), however the files were not removed from FC's file pane.

Closing FC and then restarting FC still showed the "deleted" files in FC's file pane. I tried this multiple times.

It was only when I eventually closed Firefox, that the files were removed from FC's file pane.

[Forez]

Check if this happens also in Windows Explorer and / or when you download with some other web-browser