It happens often, that you cant close streams in Moonlight getting error 503 "all sessions must be disconnected before quitting".

There are no other connections, using just one client. Waiting also doesnt help.

1. open connection
2. put to sleep with ctrl alt shit q
3. click the stop button in moonlight
4. doesnt work

Client Windows 11 Moonlight windows 5.0.1, Windows 11 Sunshine latest stable.

This doesnt happen every single time but really often, not proper way to reproduce. Only way to fix is to restart Sunshine on host.