Can't change directory using Save As on macOS

On MAC10.15.7 Docs all save to collabra file, but I can’t see that file on my computer. If I try to save to diferent path, I get this message. Casn’t change file path. THe only access to the file I have is to look at Recents.

C:\fakepath\Untitled.png

[Edit - Opaque] Shortened title and added old title to details.

(screenshot enabled by ajlittoz)

Have you provided Full Disk Access to LibreOffice.app (btw: Which version do you use)?

Yes, it has full access. I am using 7.0.4.4 on MAC OS 10.15.7