MetaMask extension loading forever on firefox

My metamask extension is loading forever, not even an option to enter password or anything.

Storage in devtools shows nothing:

I think it was fine before firefox auto updated, now wont start. Using latest metamask (12.17.3) and latest firefox (142.0b2) on windows 11.

Start by reproducing the endless loading state with MetaMask 12.17.3 in Firefox 142.0b2 on Windows 11, then inspect the extension's DevTools console and storage behavior. The issue does not name an entry point, file, or test; done means the extension reaches the password screen or otherwise starts normally in the reported environment.

Written by the indexing model from the issue text.