Thx all for the replies! Why is it 2 and 1, and not 0 and 1, is it not binary?
Have a look at: > > https://wiki.archlinux.org/title/Firefox#XDG_Desktop_Portal_integration > > Changing widget.use-xdg-desktop-portal.file-picker in about:config from 2 > to 1 gives me the kde file picker. >