doveadm ssl error when upgrading from 2.2.27 to 2.2.29

[Pallissard, Matthew]

I'm starting to see the following error when upgrading from 2.2.27 to 2.2.29.

doveadm(ip.add.re.ss): Error: doveadm client disconnected before handshake: SSL_accept() failed: error:1417A0C1:SSL routines:tls_post_process_client_hello:no shared cipher

Downgrading from 2.2.27 resolves, error still persists in 2.2.28.

I'm using openssl 1.1.0.f and an ec cert/key with the following curve.
  ASN1 OID: prime256v1
  NIST CURVE: P-256


Does anyone know anything about this off the top of their head? If not I'll try to git-bisect 2.2.27 -> 2.2.28 and see if I can find any offending commits later on this week.

-- 
Matt Pallissard