Correct me if I'm wrong, but I think that is true for all scroll views and table views (lists for non-devs.) When you tap the status bar, it generates then event to scroll to the top.
In full screen mode (a button to activate it appears on the bottom bar when the phone is in landscape) the status bar disappears along with the bottom bar with the buttons. The only things that remain are translucent back and forward button and an exit full screen button.
However, tapping the rows of pixels near the top of the screen (where the status bar would be) still scrolls to way to the top.