It might be this: https://support.mozilla.org/en-US/kb/firefox-protection-against-fingerprinting https://support.mozilla.org/en-US/kb/firefox-protection-agai...

It might be this: https://support.mozilla.org/en-US/kb/firefox-protection-against-fingerprinting https://support.mozilla.org/en-US/kb/firefox-protection-agai... You might be interested in a plugin to toggle the fingerprint protection: https://addons.mozilla.org/de/firefox/addon/toggle-resist-fingerprinting/ https://addons.mozilla.org/de/firefox/addon/toggle-resist-fi... See also: https://news.ycombinator.com/item?id=34952279 https://news.ycombinator.com/item?id=34952279 But yeah, Cloudflare causes problems but I think it's partly the site owners that crank the security settings and bot protection to max.