Comment 6 for bug 1606143

After some more investigation, it seems adding `if { ssl_fc }` does lead to the desired behaviour.
But only if the `X-Forwarded-Proto https` is set. (which makes sense).

So if you use nginx as a ssl terminating reverse proxy, you need to do something like this.

       location / {
            proxy_pass http://<floating_IP>:5000;
            proxy_set_header Host name.domain.tld:5001;
            proxy_set_header X-Forwarded-Proto https;
       }