doveadm sync SSL error when upgrading from 2.2.27 -> 2.2.29

I'm starting to see the following error from doveadm 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

I'm using a cert/key with the following curve. ASN1 OID: prime256v1 NIST CURVE: P-256

Downgrading to 2.2.27 resolves the issue. Does anyone know about this off the top of their head? If not I'll try to git-bisect 2.2.27->2.2.28 for any offending commits later on this week.

-- Matt Pallissard