The photo screensaver was running and we wanted to swipe back to a previous picture. However, touching the screen turned on the Clock so all we saw was the black background with the white clock numbers. Tapping the screen made the clock go away, but then the photo was overlaid by the App menu. Touching the screen again made the menu go away, but immediately activate the clock. So there was not way to see the full photo because everything kept overlaying it. So annoying!