Training server ATC bug

Could we do some action to fix the training server ATC bug? It’s very annoying. You spawn at an airport, tune to ATC eg EGLL ground and the controller is afk for about 10 hours. The controller is not afk and isn’t even controlling anything,but it just says Ground active for 10hr- Controller.
Device:happens to everyone
Operating System: Happens to everyone

Known issue which is being worked on.
Hopefully it will be fixed soon.
As a workaround, the server will be restarted later today.
Sorry for the inconvenience.