Version 1066 only generates a TCP (ssltcp) candidate for the sctp channel, but not for media channels. Version 1011 did this correctly.
Below the SDP, but the same is reflected in the JSON when creating a conference.
The TCP interface is configured on the server and detected and I see this here in the logs:
jitsi 2018-06-16 04:12:31.747 INFO:  org.jitsi.videobridge.IceUdpTransportManager.log() Initialized TCP harvester on port 443, using SSLTCP:true