Since GNOME 3.30, both the regular GNOME session and GNOME Classic rely on a new GSettings facility in 2.58 instead of the previously used custom override schemas.
As glib is a widely used dependency, rebasing it to a newer version seems too risky at this point, so the suggestion is to backport the corresponding functionality instead.
See https://gitlab.gnome.org/GNOME/glib/merge_requests/105 for the code in question.
Scratch build at https://brewweb.engineering.redhat.com/brew/taskinfo?taskID=21946639.
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.