General :: Touching Email In Jelly Bean 4.1 Automatically Scrolls Page Down

in Jelly Bean opening an email in the basic email app and then touching anywhere within the email makes the email quickly scroll down to hide the to/from bar. It's the only place in Android where a single touch causes a scrolling response, so when I open the email and begin to scroll with a swipe, it jumps down and then scrolls which is somewhat disorienting as it differs from how scrolling works in every other app including Gmail.