Today I learnt!

I read a short story years ago about just this. Quite an interesting read if anyone is interested.

Thanks for the response. Truly despicable the state of medical insurance.

Where does the 51,000 figure come from?

The changes can thankfully be reverted, for now, by toggling Menu Redesign and Navigation Toolbar in the Secret Settings Menu.

Secret Settings is activated by clicking the Firefox Nightly symbol 10 times in the About Firefox Nightly menu in settings.

Hopefully it stays

Embrace Extend Extinguish