Firefox 83.0 crashes my iMac since I upgraded to Apple OS Big Sur.
I just updated my iMac 27" 2017 from catalina to big sur and now firefox ( 83.0) constantly crashes the OS and forces reboot. I have confirmed it is Firefox issue by using Safari and Chrome for multiple days now and had no issues. I did a firefox refresh, reinstalled fresh add-ins (flag fox, no script) and still crashes. I disabled and then removed all add-ins and still have the issue. Just having firefox open results in reboot over night.