Current time is not being updatet propperly (full screen apps).
Gnome clock stops updating time on the top-gnome-bar properly if a full screen app is open and you hit the Super key to show the apps overview. The real current time is being updated not before you hover mouse pointer over the clock. I wish time was updated / refreshed in the background even if the upper gnome bar is hidden without the need hovering the mouse pointer over it.