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3. Not Xfce
Panel Plugins
Issue is in some other, unrelated system component. It should be fixed there.
4. Upstream Issue
Panel Plugins
Issue caused by an upstream library (Gtk / GLib / Gio / Gvfs /...) A link to the upstream issue should be added to the issue. It might make sense to keep the Xfce issue open in order to implement a workaround.
Prioritized