I am able to confirm that this is not an issue caused by the client or Webex application installed on macOS. This behavior is in fact happening due to a calling setting in Control Hub called "Hide Webex windows". Like others, I originally thought thi...

hello. @ThPreSA11  Sadly I'm currently being hit with this... shall we call it a bug? I've tried everything imaginable - ran the uninstaller tool and reinstalled client, nope, still have the bug. Then I manually uninstalled and reinstalled the client...