I could work around this problem by uninstalling dbus-user-session (and its dependendants xdg-desktop-portal and xdg-desktop-portal-gtk). Those packages came in through flatpak.
Thanks to Olaf who brought me on the right track (https://forum.ubuntuusers.de/topic/gnome-keyring-daemon-doppelt/)
I could work around this problem by uninstalling dbus-user-session (and its dependendants xdg-desktop-portal and xdg-desktop- portal- gtk). Those packages came in through flatpak.
Thanks to Olaf who brought me on the right track (https:/ /forum. ubuntuusers. de/topic/ gnome-keyring- daemon- doppelt/)