Neither gnome-shell nor gnome-shell-common are currently phasing so that is not the issue. Perhaps there is a disconnect between what update-manager thinks is available and what apt does? Or maybe the pop up regarding release upgrades raises even if do-release-upgrade won't run.
Neither gnome-shell nor gnome-shell-common are currently phasing so that is not the issue. Perhaps there is a disconnect between what update-manager thinks is available and what apt does? Or maybe the pop up regarding release upgrades raises even if do-release-upgrade won't run.