Hello, dev The commit of ea8dd949e4ab7ddd94afdbf0e96087c883192217 seems to break the allow-0rtt in server line, a connection will take very very long to complete. Remove allow-0rtt it turns normal.
conf like: listen test mode tcp bind 0.0.0.0:88 default_backend tls backend tls mode tcp retry-on 0rtt-rejected conn-failure empty-response response-timeout server default x.x.x.x:4433 allow-0rtt ssl check inter 300s alpn h2 verify none