The new MV3 architecture reflects Google’s avowed desire to make browser extensions more performant, private, and secure. But the internet giant’s attempt to do so has been bitterly contested by makers of privacy-protecting and content-blocking extensions, who have argued that the Chocolate Factory’s new software architecture will lead to less effective privacy and content-filtering extensions.
For users of uBlock Origin, which runs on Manifest V2, “options” means using the less capable uBlock Origin Lite, which supports Manifest V3.
That’s bizarre. I am also on Windows 10 and use Firefox as my primary browser, largely because I can stream DRM’d video sites (Netflix etc) to my friends on discord.
Sounds dumb, but have you tried uninstalling and reinstalling? I might suggest also removing or disabling all extensions to see if that does anything.