clipboard icon won't show up when using https connection

[lucksufe]

I use nginx conf from official document, but seems clipboard icon won't show up when https connection，take control or not the clipboard icon keeps invisible. When I use http connection this function works, the clipboard icon will show up after I get control and disappear when release control.

Use below nginx config, the difference of http & https is only the listen port.

https://neko.m1k1o.net/#/getting-started/reverse-proxy?id=nginx

server {
listen 443 ssl http2;
server_name example.com;

location / {
proxy_pass http://127.0.0.1:8080;
proxy_http_version 1.1;
proxy_set_header Upgrade $http_upgrade;
proxy_set_header Connection "upgrade";
proxy_read_timeout 86400;
proxy_set_header Host $host;
proxy_set_header X-Real-IP $remote_addr;
proxy_set_header X-Forwarded-For $remote_addr;
proxy_set_header X-Forwarded-Host $host;
proxy_set_header X-Forwarded-Port $server_port;
proxy_set_header X-Forwarded-Protocol $scheme;
}
}

[m1k1o]

It won't show where clipboard is natively supported (in chrome with https). But I undeservedly it would be more convenient for you to see it even in this case, right?