With fresh new EAP 7.1.0.DR3 - when I disable 'https' listener in Undertow subsystem (which is now in configuration by default) by setting its 'enabled' attribute to false. Then after 'reload' the webservices subsystem fails to start with following error in server log:

ERROR [org.jboss.as.controller.management-operation] (Controller Boot Thread) WFLYCTL0013: Operation ("add") failed - address: ([("subsystem" => "webservices")]) - failure description: {"WFLYCTL0180: Services with missing/unavailable dependencies" => undefined}

Note: default http-listener is still enabled and present in configuration.
Note: basically this can be reproduced any custom {http|https|ajp}-listener.
Note: when I remove disabled listener, webservices subsystem successfully starts.

Expected behaviour is that webservices subsystem successfully loads even in case some listeners are disabled.