So, Firefox 4/Minefield pulled a fast one on me and instead of looking like it should, which is this:
it somehow, all on its own, ended up looking like this:
As you see, the fancy new menu button has gotten itself on the right end of the tab bar. A subtle change which is trivial to correct using Firefox’s toolbar customization… except the Mozilla engineers in their infinite wisdom have decided that the menu button shan’t be moved.
Great. How the fuck am I supposed to fix this, then, without having to build a new profile from scratch?
Well, the trick is to kill the browser and then edit $YOURPROFILE/localstore.rdf. Find the line that says
currentset="appmenu-toolbar-button,tabbrowser-tabs,tabs-closebutton,alltabs-button,new-tab-button,tabview-button" />but with the “appmenu-toolbar-button” misplaced or even missing entirely. Fix it so that it looks like the code above, with appmenu-toolbar-button first. Save the changes. Now restart the browser and hope for the best!
And no, removing appmenu-toolbar-button altogether won’t get rid of the menu button. It’s just one of the ways to trigger this issue.