the idle timer was updated by gnome-screensaver, iirc I've seen some recent bug saying that since gnome-shell stopped using it the timer was not being updated as it should so it would be an issue in gnome-shell yes
the idle timer was updated by gnome-screensaver, iirc I've seen some recent bug saying that since gnome-shell stopped using it the timer was not being updated as it should so it would be an issue in gnome-shell yes