Probably an outdated implementation of our rules, regarding Firefox on your machine. Feel free to file an issue; also we will be switching to Cloudflare's mitme

Probably an outdated implementation of our rules, regarding Firefox on your machine. Feel free to file an issue; also we will be switching to Cloudflare's mitmengine (based on the same research paper, but they have way more resources to keep it maintained at scale, thus making it more accurate) in Caddy 2 in a matter of months.