b93342f72e
Showing multiple preference dialogs at the same time (for instance by repeated `gnome-extensions prefs` calls) may or may not work as expected, depending on whether any of the dialogs is modal or not (read: opened via the Extensions app). The easiest way to address this is to disallow more than a single dialog at the time. It's arguably also the more predictable behavior, and means extensions don't have to deal with inconsistent state caused by multiple dialogs. https://gitlab.gnome.org/GNOME/gnome-shell/-/issues/4564 Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/2013>