The more informative thread linked from the other one posted here
https://bbs.archlinux.org/viewtopic.php?id=285590
Mentions cases in which users were not on GNOME (sway, etc) and/or needed a portal for something like flatpaks.
If this is you then, as mentioned in that thread, you may wish to use a different portal, such as xdg-desktop-portal-gtk.
(For KDE users - if you use one you should have xdg-desktop-portal-kde, which does not appear affected either.)
The last 2 posts there offer some assurance that a fix is coming, as well as a suggestion to mask the offending service in the case one does not wish to uninstall.
Heres the more upstream bug stuff: