Navigate between Threads in Pycharm

Hello, I recently move to Pycharm Professionnal in my company.

Before that i was on Pycharm Community.

We have two programs wich communicate between them with PyZMQ. Each of them are open in two separte window of pycharm.

With the Pycharm 2017.3.7 Community Version we are abble to navigate between the threads with the debugger. But with most recent versions we can't do that anymore so we are stuck on this 2017 version. Is there a way to unlock us from this ?

I tryed to tick and un-ticking "Gevent compatible" but the issue is still there. I readed many forums but i didn't find any answer.

Thank you,

Regards,

Loic