Header not covering entire browser address bar on Android

After upgrading to one of your 1.7 beta releases (I'm not sure which one unfortunately, I did not give this design flaw top priority at the time), on some of my screens the header no longer completely hides the browser address bar on my Samsung galaxy SII (Android 4.1.2, standard browser) (like it did in earlier versions, and still does on iPhone). See some attached screenshots.