Enable proxy_protocol on https

[basti]

Hello,

I have nginx 1.14.2 on debian buster and need to enable proxy_protocol.
(https://docs.nginx.com/nginx/admin-guide/load-balancer/using-proxy-protocol/#listen)

When I enable it on http all is fine. When i try to enable it on https
no connection can be established. No syntax error and no log entry.

listen          80 proxy_protocol;  <-- work

listen          443 proxy_protocol; <-- does not work

best regards