Comment 17 for bug 30857

I'm not so sure those are actual duplicates, to me and many others that has posted in forums (see those links), it is impossible to duplicate this behaviour in anything but Firefox, not even other Geckobased applications like Epiphany.

Menus, desktop, programs - you name it, they behave like they should, but not Firefox. On three very different computers with wildly different peripherials just for me! That means *something* has to do with that application, yes? Maybe it only happens together with Xorg, I don't know. I don't see how any info in those change anything about this bug, and especially not how they make it "not a firefox bug".

And if it's a Xorg issue, why isn't assigned there instead of silently dropped into general limbo?