Hello,
I'm using nginx 1.19.6 and when enabling "ssl_reject_handshake" in the top server block, it will disable TLS 1.3 if no certificate is included in the same server block or in the http block.
server {
listen 443 ssl;
ssl_reject_handshake on;
}
server {
listen 443 http2 ssl;
server_name test.com;
root /home/test;
ssl_certificate ssl/rsa.crt;
ssl_certificate_key ssl/rsa.key;
}