Rated 2 out of 5 stars
Found that this seemingly was the culprit that was causing me to lose my Toolbars in Firefox 22 through 23.0.1 (and possibly earlier). Loved the app's function, however, but regretfully I had to uninstall it. Hopefully, the problem will be resolved, whatever it is! (Sorry about putting bug here. Please forgive.)This review is for a previous version of the add-on (0.4.1.1-signed.1-signed).
I don't use Firefox myself (I use SeaMonkey), but I've just installed FF23.0.1, installed WikiSearch and created a new toolbar and added a few buttons to it. It all seems to work as I expected, unless you meant something else?