This is my biggest issue. I tried using Firefox exclusively for a period of time but experienced a 10x increase in the number of reCaptcha manual verifications I had to complete. Going to the same sites on Chrome has no reCaptcha.

For me, this is blatant anti-competitive practice and should be punished.

I've used both firefox (dev edition) and chrome pretty evenly for a long time (work stuff in chrome, personal in ff), and I haven't noticed any more reCaptchas in firefox than I get in chrome. If you just started using firefox, I could see the extra captchas being due to having "too clean" of a browser, or a different browser that was never used before tripping some sort of anti malware or suspicious login system.

All just speculation, but I haven't noticed the same issue.

This is exactly it. Modern recaptcha is "reputation" based. So if it fingerprint matches you against a known profile, you never see the captcha. One could argue that a residential ip block combined with a common browser should be sufficient to filter most bot traffic, but it's not exactly in googles interest to worry about non-chrome user experience.

Well TIL. This gives me hope. I will put some time back into FF and see if there is an eventual drop in reCaptcha.

As a regular user of multiple browsers, I haven’t noticed this. Could you show a few examples? I’m not doubting your experience at all, I’m just curious to see if there may be a common thread.

Their handling of recaptcha should be criminal. They are the single most annoying thing to deal with this side of popups in their heyday