Sometimes, 1 of 10 times perhaps, when I save an item using the S key, the little “Saved!” bubble circled in the picture above remains on screen. Switching to a different feed or to the dashboard does not make it go away.
I occasionally experience this problem too. It also happens with the “Removed” tooltips.
I think I’ve finally figured out what causes it. Normally, if I hit save and then wait, the tooltip dissapears in about one second. If I hit save and then immediately go the dashboard (usually by hitting “S” and “D” in quick succession), the tooltip does not go away.