LoPy not receiving returned packets in Class A

[smbunn]

I have a FiPy and am running a LoRa connection to a commercial provider. I am having no issues receiving data from my device. Occasionally I want to send it a packet. The very first packet I send it gets enqued and sent the next time a packet is received. I see this message in my LoPy. However that is the end of it. No further messages are received even though I see them being sent the next time a packet comes in from the LoPy.

I have heard through the grapevine that this is a known problem. is this true and is there a fix? I updated my firmware yesterday.