An additional data point, consistent with what's been said here, is that our users with lightdm and unity-greeter who log in to a gnome-shell session instead of a unity session see exactly the same sort of corruption.
An additional data point, consistent with what's been said here, is that our users with lightdm and unity-greeter who log in to a gnome-shell session instead of a unity session see exactly the same sort of corruption.