Opening the file chooser from the firefox flatpak, or any other sandboxed app crashes
xdg-desktop-gnome-portal.

See https://github.com/flatpak/xdg-desktop-portal for a traceback. After some digging, the
gschema of FileChooser contains a view-type in newer versions but not in the one shipped by gtk4 4.8.1.

I should note that to reproduce the issue one has to first set the the view type of the file chooser with the button bellow the "Open" button.

Maximiliano Sandoval R.

Is the one on
https://github.com/flatpak/xdg-desktop-portal/issues/1140 the traceback
you mean? (Please be specific, and don't assume that maintainers know all
the context for every bug that is reported.)
...
...

If flatpak/xdg-desktop-portal#1140 was your bug report, it appears you
are using a version of GTK that is not the one provided by Debian. Did
you compile your own xdg-desktop-portal-gnome or one of its dependencies
from source, perhaps installed in /usr/local?

If you did, it's up to you to do the necessary system integration to make
it work, which in this case would mean upgrading GTK 4 to a backported
version that meets x-d-p-gnome's requirements, or building a version of
x-d-p-gnome that is old enough to work with Debian 12's GTK 4, or
installing the GSettings schemas from the locally-built version into
/usr/local/share.

I would recommend using Debian's packaged versions of x-d-p-gnome and all
of its dependencies.

    smcv