Unity zmq sub_receive hangs #223

I am trying to do something similar with Dream to Fly paper so I want to train an RL with vision as input.

The issue is that while everything is running fine after a stochastic number of env steps (700-1400) sub_receive(msg); , which is located inside bool UnityBridge::handleOutput() and is responsible for fetching the camera frames from Unity throught zmq, hangs.

I tried debugging it with many ways but still not able to locate the root cause. Have you experienced any similar behavior?

Have you experienced something similar or can help with this?

Thanks a lot in advance!