Hi
It that Cloudflare testing new approach to “fight bots” and start to heavily rely on fingerprinting
Luckily it looks like experiment and not widely enforced just yet…
Upd:
Seems already reported to Mozilla
https://bugzilla.mozilla.org/show_bug.cgi?id=1912324
https://bugzilla.mozilla.org/show_bug.cgi?id=1998647
https://bugzilla.mozilla.org/show_bug.cgi?id=2036440