In Firefox Nightly as of July 25, the "Open Link in New Tab" and maybe some related gestures are broken again. This appears to be very similar as described at
https://addons.mozilla.org/en-US/firefox/addon/firegestures/reviews/880547/
I also tried version 1.11(.0), but the gestures didn't work there as well. So it doesn't seem to be a simple reversal of the issue fixed in 1.11.1.
In Firefox Nightly as of July 25, the "Open Link in New Tab" and maybe some related gestures are broken again. This appears to be very similar as described at
https://addons.mozilla.org/en-US/firefox/addon/firegestures/reviews/880547/
I also tried version 1.11(.0), but the gestures didn't work there as well. So it doesn't seem to be a simple reversal of the issue fixed in 1.11.1.