I have configured a nextcloud server inside my LAN with a port forward for all 443 traffic to the IP.

The application control rule Block all TCP port 443 traffic that is not HTTPS is blocking the traffic.

An encryption cert was configured for the nextcloud server, and port 80 is a redirected to 443 on the web server.

Is this one of those application anomalies that doesn't conform to the 'not HTTPS traffic' rule?