more:
https://www.reddit.com/r/firefox/comments/bk54mu/addonsextensions_broken/
https://www.reddit.com/r/firefox/comments/bkfte9/if_you_have_issues_with_your_addons_being_marked/
This one has Mozilla's statement on the screw-up
https://www.engadget.com/2019/05/03/firefox-extension-add-on-cert/
I wonder how many are affected. I'm using 66.03 64 bit and my addons are working.
I'm back to normal now. Looks like they rolled out an automatic fix this morning.
I got no notifications when my add-ons mysteriously vanished (thank you for posting about this!). Didn't get the automatic fix until I'd updated to the latest version (I was one iteration behind). and even then I still had to manually re-enable several add-ons and the theme. Poorly handled, Mozilla.
There's a bug in Firefox going around that disables all of your add-ons. I got hit and I have version 66.03 64-bit. Not sure if other versions are affected.
Haven't found a (good) workaround yet.
Here's a reddit thread on the matter:
https://www.reddit.com/r/firefox/comments/bkcjoa/all_of_my_addons_got_disabled_and_they_are_all/