After fixing bug 1041383, I notice that there are no transitions on the notification toaster (which makes it feel a bit weird if it disappears while you drag it now). We should implement something, either a transform of it appearing from the top and disappearing from the top, a fade, or something along these lines. Cc'ing UX people for comment on the correct behaviour. STR: - Take a screenshot Expected: Notification toaster animates smoothly onto screen (somehow), and disappears smoothly after it times out. Actual: Notification toaster appears instantly, and instantly disappears after the timeout.