My Pictures are on a Partition of the main drive, which I can reach as D: out of windows, if I need, or normally out of Linux as a partition drive named "Daten".
In the meanwhile the problem was back, I de- and reinstalled xnview over "Anwendungsverwaltung", now as a flatpak, and then the recycle bin didn't work at all...
Then I deinstalled the flatpak and downloaded and installed xnview MP directly from the xnview website as .deb.
And, helas, the recycle bin worked as it should!
But not for long: A few days after the problem was BACK!
NO deleted pictures in the recycle bin.
Does anybody know a solution, please?
Rainer