Library Manager Exit or Quit issue

In Library Manager application startup script below, I realize that Library Manager Task ID application still exist even I already quit Library Manager application. I used the same startup script below for DxDesigner and Expedition applications. Both applications quit or exit completely without Task ID in Windows Task Manager. Is this a bug of Exit functionality in Library Manager? Any workaround you can advise to kill Library Manager application in Windows Task Manager?

Option Explicit

Scripting.DontExit = True

Scripting.Globals.Data("ApplicationStartup") = ScriptEngine