Are you connecting over a VPN of some kind? Are you running some kind of anti-tracking fingerprint-resistant browser?
Webview and Chrome on Safari over Comcast.
I don't know. Sorry. No captcha here.
Cloud flare dns maybe.
Yes, I had the same problem and it cloudflare DNS 1.1.1.1 unfortunately. Google's public DNS ranks higher than Comcast for me, but I'm sure there's others.
That’s the one. I forgot I had 1.1.1.1 set (and 8.8.8.8 as a fallback).