I bet.
FWIW I'm running Firefox Quantum 66.03, 64 bit.
I replaced Adblock a long time ago with uBlock Origin. You might give it a try.
https://addons.mozilla.org/en-US/firefox/addon/ublock-origin/
I only did one thing that was not in my description, which was to restart FF in safe mode by holding the shift key down when I clicked the FF icon, after I uninstalled and reinstalled uBlock Origin. I then started FF in normal mode. I did this because I have found that FF sometimes sorts out its own problems by temporarily running in safe mode.
If you are running FF Quantum, I would try repeating most of my original post again -- check the two boxes, reset the about:config value to false, uninstall Adblock, either reinstall Adblock or install uBlock Origin, and start in safe mode, close that, then start in regular mode. If your extensions are still enabled, reset the about:config value to true, and if your extensions survive that, uncheck the two boxes.
Mozilla will probably quickly release an update that fixes this problem.
What a PITA.
if they don’t offer the fix tomorrow or maybe next day- I’ll definitely try that process again only this time w/ safemode after reinstall and reset to true
I’ve been reading a few blogs on the issue , and they state mozzilla will be issuing fixes as soon as possible- so I’ll give it a few days- I hate running with the signatures enabled- but nothing else to do for now I guess-