[tty2300]

If you enable the resist fingerprinting setting on Firefox every website will slam you with captchas and random errors.

[zaarn]

I don't run with resist fingerprinting, the problem persists even if I am on a fresh firefox install with no addons and try to log into my google account.

[ionised]

I enable all that stuff and the number of ReCaptchas, while annoying is probably on like 30% of the sites I visit. And most of them I can live without.