Right click gestures have become very buggy lately. For example closing a tab with a gesture opens a new unwanted tab. Reloading a page opens a new tab as well even when I did not perform the 'new tab' gesture, I only performed the reload one. Sometimes closing a tab also bookmarks the page for absolutely no reason.

Then again, I had none of these issues with any gesture addon before Firefox Quantum which seemed to ruin the efficiency of many add-ons.