If you enable privacy.resistFingerprinting in Firefox you automatically fail v3 Captcha with score 0.1
People who want to try it out: https://recaptcha-demo.appspot.com/recaptcha-v3-request-scor...
When we have time we'll have to trace through what it's doing and what components of RFP are causing the failure. (If anyone wants to do that and report in the bug, we (Mozilla/Tor) would much appreciate the contributions!)