As many people have noted, the bug tends not to appear for a while. Then when it does, it is usually triggered several times in a row. A way I found to make sure the next click does NOT trigger the bug when such an accumulation appears, is to keep the right mouse button pressed for a second or two on my next click, then release it. That brings up the context menu pretty reliably.
I also think the "accessibility" thing has been mistakely interpreted as a workaround. Even if this is not technically a Ubuntu bug but a Mozilla bug, it would be really cool if the Ubuntu bug squashers could fix this as apparently Mozilla hasn't for a LONG time! -- [MASTER] right click (with button release) might activate random popup-menu-item https://bugs.launchpad.net/bugs/187313 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs