Even more: it is a global feature that is supposed to work for any view controller with a scrollable view. (I wouldn't describe it as "double tap", though: you

Even more: it is a global feature that is supposed to work for any view controller with a scrollable view. (I wouldn't describe it as "double tap", though: you tap the status bar once, but in Safari the status bar is hidden as you scroll down so you have to tap the top of the screen to reveal it.)