No seriously, don't put up with this bullshit. Dump Firefox and come over to Pale Moon (www.palemoon.org). Your favorite plugins and add-ons will still work, you can customize the interface just how you're used to (that means no Australis excrement) and have the latest security updates too. It's fast, stable, standards compliant and doesn't force needless stuff on their users. They don't and won't sell your details, snoop on your browsing behavior and subject you to advertising. This whole process is painless thanks to their profile migration tool but just in case, back up your browser settings/bookmarks/add-on settings and get back to browsing the Internet on YOUR OWN TERMS.
It's incredible that people are still using Firefox at all honestly. Firefox is just a shell of what it once was and now it's just a name - one forever tarnished by corporate greed/influence and the lust for money. Firefox has become a cancer. It needs immediate removal - permanently.