#7 Closing the About window makes application go to system tray

[Juan Gabriel Carrera Otero]

1 - Open the application
2 - put some tasks
3 - open the about dialog
4 - Close the about dialog using the close button in the dialog header
5 - The application disapears. There is an icon in the system tray.
6 - Secondary click in the system tray icon and choose restore.
7 - The application is back