When I bind both 'swipeleft' and 'swiperight' handler to the same element and then unbind the 'swiperight' handler, 'swipeleft' event handler is no longer fired.
In the above test page, first 'swipeleft' and 'swiperight' handler is bound to #target element.
By the clicking the button, 'swiperight' handler is unbound. Since 'swipeleft' handler is not unbound, you expect that 'swipeleft' handler is still fired, but actually it's not fired anymore.
In fact, at the following line, when teardown 'swiperight' event handler, all the 'swipe' handler is unbound.
Swipe: Keep swiperight when tearing down swipeleft and vice versa
(cherry picked from commit 0eba6e4)