When some configuration in Elytron Client configuration file uses set-protocol then value of this element is not used for outgoing connection. Elements set-host and set-port are used correctly.
Following authentication configuration part of wildfly-config.xml should use URL remote+http://localhost:9990 for outgoing connection, but protocol remote+http from set-protocol is not used:
We request blocker because this issue blocks feature for RFE EAP7-567. Due to issue incorrect protocol can be unexpectedly used for outgoing connection, e.g. http can be used instead of https.
This issue is blocker for GA, not for testing.