This needs a fix in EAP codebase directly, not in the component.
PR: https://github.com/jbossas/jboss-eap/pull/2172
Verified in EAP 6.3.3.CP.CR1.
Putting back to ON_QA...misclick.
Reopenning, I've enabled jmx in I don't see operation listDeliveringMessages in module=JMS, It's just in module=Core.
Closing as won't fix.