it worked fine for me until the recent update.. when i go into a youtube live stream, it blocks the live chat window. i cant find a work around except to disable it. turning it off does nothing, and adding youtube to the white list does nothing.
ill deal with the issue since i actually like this blocker, and im not chatting often on youtube livefor it to be a nuisance to disable, since i dont need to restart the browser, and youtube dont have any popups..

EDIT : UPDATE !!!! i turned off hardware acceleration from firefox options and went into about:config and turned off webgl. apparently its an issue with my video card. its working fine now.