This is not a bug, but simply a limitation because it isn't possible with the current technology I used to built the app (UWP). There's many existing threads about this, e.g.: Timer not stopping when I shutdown my computer
That said, I will migrate (I actually already migrated, but won't release before the end of my vacations 😃) to a new technology (WinUI3 / WinAppSDK). Then, the app will be able to stop the timer on logout or shutdown. I'll make this a planned feature request and it will come with one of the next updates, perhaps late-summer.
However, there will be some other limitations:
- Because the shutdown signal isn't sent to the app itself, but to the main window of the app, the app will only be able to stop the timer if the app is running and the main window is visible. The timer won't be stopped if the app is closed
- When you use the sync and the timer is stopped once the app receives the "shutdown" signal, it's not guaranteed that the app will also be able to sync that new information to the Cloud before the app is shut down by Windows - so on the phone it might look like the timer is still running