Firefox V142.0 has a HUGE BUG! Gmail now fails (freezes) when I try to attach a file. If/when this gets fixed, I will turn off updates for Firefox. Is there an easy way to get back to the last version?
Yes to all of the above - restarted and rebooted. File type is not the issue. Gmail freezes as soon as I click the icon to attach a file. This did not occur before the update.
I finally managed to turn off update checking and the annoying update popup. What I have works, and I was tired of Firefox wiping out all my addon settings every time it updated. Browsing with Firefox is now less painful.