Since I upgraded to FF 29 I now have my original add-on that looks like a key, and a new one that just says 1P. It think they both activate the same add-on. When I hover over the 1P, bubble help says "show 1Password." I do not think that the "1P" is really the add-on, but rather another FF button that got moved when I did the upgrade. I cannot find anywhere in FF to disable it.
Not a big deal, but odd, and I would like to fix it.
FF add-on 3.9.20