"Unexpected run control state" when running Qt Widgets Application

1. Start Creator from the command line.
2. Create a new Qt Widgets Application project using defaults.
3. Build and run the project.
4. Close the project's window.
   On the command-line you can read:

   Unexpected run control state  "RunControlState::Stopping"  have:  "RunControlState::Running"
   

Might something have gone wrong in the refactoring of RunControls?