Tested on EAP HQ 5.1.0 Post Release CR2 and nightly build #62 (HornetQ 2.2.1.QA-10291).

Part of client code:

connection.start();
session = connection.createQueueSession(true, Session.AUTO_ACKNOWLEDGE);
producer = session.createProducer(a);
receiver = session.createReceiver(b);
message = (TextMessage) receiver.receive(1000);
producer.send(message);
session.commit();

Reproducer:
Both attached ZIPs in JBPAPP-5707