Hi,
When a LabVIEW exe finishes execution it will show the main VI with the option to run the application again.
This is expected behavior, if you need the application to close itself completely you must call the "Quit LabVIEW" VI to close the Run-Time. You can find this VI in the application control palette.
Let us know if you have any further questions.
Regards,
Juan Carlos
N.I.