Additional unity window is opened on playing the scene when virtual reality is enabled for UWP

Steps to Repro:
1. Create a new project
2. File > build settings
3. Switch to the universal windows platform
4. Player settings > XR settings
5. Enable virtual reality support
6. Play scene

Actual Result:
1. Observe that another window of unity is opened
2. The opened window is not selectable, however, it can be closed
3. The window closes automatically when the play mode is stopped

Expected Result:
On playing the scene another window of unity shouldn't open

Environment:
Only on Windows

Occurring with:
2018.3.0a3, 2018.2.0b9

Working with:
2018.3.0a2, 2018.2.0b8