In Windows 8/RT the camera freezes on multitasking

Question

On multitasking camera (Media Capture class) freezes on last view. How to start preview of camera on resume of the app. Also, how to resume to the app if we came from another app.

1. Start App

2. Your camera will start now go to different app and come back to your app after 5 seconds, app camera will freeze on the last view.

Please give me solution for this bug.

Thanks