@Moonchild
Looks like some more things are getting deleted in Firefox 29 to make way for the Australis UI. The so called developers at Mozilla are taking away the Flexible Space, Space and Separators in the Customize box.
https://bugzilla.mozilla.org/show_bug.cgi?id=985308
Look at comment #2 from Matthew M. If this guy is a Firefox "developer" (and I use the word "developer" very loosely), in my opinion, the so called Firefox developers are getting lazier and lazier and if I didn't know better, I'd swear Mozilla has hired a few guys from Opera when the Opera so called developers removed the Bookmarks Toolbar in Opera 15.
I use the Space and Separator in both Firefox and Pale Moon. I hope you keep these things in Pale Moon since I think removing these items in Firefox 29 is another boneheaded move by Mozilla.