Hi i just updated my firefox beta (security and stability update). Since then i can't flip between taps using the trackpad touch gesture (the two fingers move). I wonder if anybody updated recently had the same the problem?
Thank you very much Chris. I just enabled the gesture back. Though i still think they should put it as a default and then put an option in preferences so people can disable it if they want! anyway this is the way to enable it for anybody interested, a bit clearer than Chris description:
This feature can configured manually in about:config. Search for "browser.gesture.twist" and set values of "browser.gesture.twist.left" to "BrowserrevTab" and "browser.gesture.twist.right" to "Browser:NextTab".