Teamspeak 3 Reverse Proxy [NGINX] [WireguardVPN] [IFS]

Hi,
do you actually use Nginx UDP Reverse Proxy for your TS3? I tried it myself with a simple test config:

stream {
            server {
                    listen 9987 udp;
                    listen [::]:9987 udp;
                    proxy_pass 10.0.0.2:9987;
                    error_log /var/log/nginx/ts3.log;
            }
    }

However it doesn’t work, on wireshark I can see some traffic, I also tried changing the Port on the Nginx server, it seems like something tells the ts3 server that it doesn’t like, also my version is

Address:10.0.0.2
Version:3.9.1 on Linux
License:Activation License
Uptime:76 days 11 hours 59 minutes 6 seconds
Current Channels:257
Current Clients:101 / 512 
Current Queries:2 / 512