Well yeah, Iron V 31 has issues alright. And it's not just extension problems. The password manager is also screwed up again, and NOT just in incognito mode. At least it is for me. Damned thing wiped clean my 'login data' SQlite DB file in both incognito and regular mode. Good thing I back up my profiles 'before' an update.
I'll say it again, Version 31 should NEVER have been released. V 33 'may' fix the extension thing, but I've seen nothing about fixing all the other things the devs broke on their way to that FUBAR'd release!