I posted a few days ago about this issue, but I have some more info. I only get the errors if I make a hairpin request from my public, i.e. LAN IP ⇾ NAT ⇾ public IP ⇾ CF ⇾ public IP ⇾ NAT ⇾ service = browser security check challenge failed. If I use mobile data and make the request, it works as expected.
Here is a gist of the failed request ⇾ CloudFlare browser secuirty check error for apps hosted via CF (cloudflared) tunnels - Started mid April 2023 · GitHub
Any ideas on how I can bypass this issue? It seems strange that it only happens on hairpin requests.