So Learning Mode and Image Validation mode should work with all the *new* messaging protocols (JMS, IBM MQ Native, RabbitMQ). I'll try to get the docs updated.
As for your issue with new operations: There are some bugs in 9.1 around Learning Mode and new stateless meta transactions that affect all protocols, not just JMS. It looks like we have some patches available. Contact support and mention our internal case number DE140494.