Tor nodes with OpenSSL 1.1.1 can't communicate with each other

We seem to have trouble in networks where both clients and relays are running openssl-1.1.1 . In particular, a chutney network on openssl-1.1.1 (11 sept 2018) will have its clients fail to bootstrap because they cant communicate any bytes after the SSL handshake is done.

The problem might be that 1.1.1 is the version that introduces TLS-1.3, so these nodes are trying to do TLS-1.3 with each other.

Thanks to teor, dgoulet, nickm for the debug help.