It's probably because of resistFingerprinting in about:config.

I have it set to false, though... 🤔

Weird thing is it fails on pages infected with cloudflare (says browser not supported), but cloudflare's own test page claims everything works properly.

It must have something to do with NoScript, but I have everything remotely related to cloudflare set to trusted, so I don't know what.

Works in incognito mode, but I don't want to navigate the webwithout ad blocking.