Handshake error when accessing with IP

[FoxKyong]

Hi, I am getting an error when accessing my own server with IP instead of DNS.

An error occured

HandshakeException: Handshake error in client (OS Error: TLSV1_ALERT_DECODE_ERROR(tls_record.cc:587))

The certificate should be ok, there is IP and DNS entry in Subject Alternative Name.
Also it works from any other gemini clients I tested, both with IP or DNS. So I guess that the problem is in deedum.