First post here on the forums, have had my New Macbook Pro for a few months now.. My three finger swipe for forward/back was working great until tonight (which is my favorite feature on Safari)...But now when I back-swipe to return to the previous page it closes my browser. Then when I proceed to relaunch my browser it returns me to the same page where it closed. Does anyone please have a solution to fix this??

ANY HELP GREATLY APPRECIATED!