Comment 48 for bug 748850

Since Firefox 23 the addon doesn't fix this for me either.

The addon say the bug is fixed in Firefox 23, but at least in linux isn't.

In the comments you have a solution:

https://addons.mozilla.org/es/firefox/addon/bug582139/reviews/495974/

For those guys who want to put their "bookmark icon" into the nav bar while the menu bar is not hidden (for those who dont like the orange Button in the upper left corner):

Just put these lines into the userChrome.css file which is in the chrome folder of your FF-Profile.

#bookmarks-menu-button{
display:-moz-box!important;}

I haved tested it and works for me.