The application still exists in Task Manager when using Close button in Ribbon

[Nam]

Hi,

I'm using Ribbon Control for my application. When I press Close button, my application close but in task manager it still exists. 

I guess that maybe I use ShutdownMode="OnExplicitShutdown"  in App.xaml because I'd like to load My custom splash screen for this application.

Could you help me?

Thanks!

[Gokul Thanudhas]

We are unable to reproduce the issue from our end. Please refer to the sample and the video for your reference.

Please provide more information or share the modified sample. So that we can prompt the better solution

Attachment: RibbonControl_c4e59040.zip