Whenever I'm watching fullscreen video on Youtube everything except the video is invisible. Whenever I tap on the screen the bars at the bottom and the top never appear. The elements still work when I click on them, but they don't show up. I can confirm it's a problem with the browser because it works just fine on my stock browser, but strangely I've also had no problems with this on my Nexus 7. Is there anything I can change in the settings (about:config) to fix this? I'm running Firefox on my Samsung Galaxy S2 (SCH-I415) with Jelly Bean 4.1.2