An onion with a red slash on multiple onionsites with valid SSL

Tor Browser is incorrectly flagging the https://clearnetonion.eu.org/ 's onionpage as "Tor Browser detected a potential security threat and did not continue."

But in your Tor Browser documentation https://support.torproject.org/onionservices/onionservices-5/ the icon should be the first one because the site falls under the "The Onion Service is served over HTTPS with a Self-Signed certificate." category.