Mattermost marking users "offline" when they are "away"

Troubleshooting
36

yes i have a reverse proxy on nginx:

server {
   listen 443 ssl http2;
   server_name xx.xxxx.com;
   ssl on;
   ssl_certificate /etc/ssl/certs/xxx.com.pem;
   ssl_certificate_key /etc/ssl/certs/xxx.com.key;
   ssl_session_timeout 5m;
   ssl_protocols TLSv1.1 TLSv1.2;
   ssl_ciphers 'EECDH+AESGCM:EDH+AESGCM:AES256+EECDH:AES256+EDH';
   ssl_prefer_server_ciphers on;
   ssl_session_cache shared:SSL:10m;
   location / {
      gzip off;
      proxy_set_header X-Forwarded-Ssl on;
      client_max_body_size 100M;
      proxy_http_version 1.1;
      proxy_set_header Upgrade $http_upgrade;
      proxy_set_header Connection "upgrade";
      proxy_set_header Host $host;
      proxy_set_header X-Real-IP $remote_addr;
      proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
      proxy_set_header X-Forwarded-Proto $scheme;
      proxy_set_header X-Frame-Options SAMEORIGIN;
      proxy_pass http://192.xxx.xxx.xxx:8064;
   }
}