With Artemis 2.6.4 issuing a SUBSCRIBE and asking for a receipt returns a RECEIPT frame with multiple 'receipt-id' headers. This is surprising and will likely confuse many clients. Other background:
1) STOMP protocol 1.1 or 1.2.
2) Does not occur with protocol 1.0.
3) Does not occur with Artemis 2.4.0.
3) A tcpdump of the transaction traffic. Look at lines 138-140.
Let me know if you need other documentation.