A month or two old, and it couldn't update? This is surprising. I just yesterday stumbled upon somebody's forgotten Firefox v43, and it upgraded itself to late

A month or two old, and it couldn't update? This is surprising. I just yesterday stumbled upon somebody's forgotten Firefox v43, and it upgraded itself to latest. It took three relaunches: 1. Peeked in the About box when the second site I tried to load glitched visibly. 2. Let it upgraded itself to v50-something. 3. Site still broken. 4. About box again, to see if it really updated… yep, but another update already downloaded. 5. Let it upgrade again (didn't note the version). 6. Site slightly less broken. 7. Back to the About box, upgrade a third time. 8. Site fully functional, but checked the About box again to be sure… 9. Up-to-date. Edit: Just checked; user is now on v116.0.2