I have a question which is similar to https://support.mozilla.org/zh-CN/questions/1015401 which does not have an answer. Basically, when using firefox on Surface 3 / Surface Pro 4, when you swipe up the screen to scroll the page, there is a high probability that you would be switched to another tab. In that question, disabling All-in-one gesture workarounds the problem. In my case, it's FireGesture. However, I don't want to disable this, since sometimes I use it with mouse and keyboard so gesture control is useful. With some experiments, it seems like that * If you wait for one swipe to finish and then start another one, there is no problem. * Only swiping up has this problem. Swiping down is ok. * I've disabled prev-tab/next-tab gestures in FireGesture, but the problem persists. Anyone else has better solution than just disabling gesture control addons?