'Pty is closed.' BUG

[enjoysmath]

I am using pywinpty and intermittently keep getting 'Pty is closed' after spawning a process. So I was thinking I should kill all Pty processes on my system. How can I do that?

This is really tricky to debug. Yes, I am closing the process properly before quitting the thread that uses pywinpty. It's a PyQt5 application. I also tried creating a separate console EXE that my GUI EXE calls, and that was even worse of a hell. How can I fix this?