It is a problem only if you are mixing up application layers.

If you keep your queueing system and business process as separate layers with queueing system serving only as a means of transporting business events then you can make it all to work correctly.

Think in terms of IP protocol (as in TCP/IP). It is unsuitable for transmitting financial transactions. Yet, financial transactions can be made to work on top of it if you separate the layers and treat IP only as a component mechanism of getting data from A to B.