I really want Firefox to be the best browser, but I don't understand how some changes get through. The latest update on android included flashing bars on two sides of the screen, every time I scroll a page. It's such a painful visual effect that it makes you change the way you use the browser... who would want that?

I looked for a way to turn it off but didn't find much. I finally stumbled across apz.overscroll.enabled in about:config, which I turned off and thankfully the flashing went with it.