VR does not work in standalone if the user has used the VR preview

The VR mode does not turn on when using the Alt+Enter method in standalone if the user has previously used the VR preview feature during the same session of working in the editor. Once the Editor is closed and reopened the user can use the standalone VR mode again until the VR preview is used.

1. Make sure Oculus is hooked up and turned on
2. Open the editor
3. Play in Stand alone mode
4. Press Alt+Enter
5. Notice that the VR mode works
6. Stop Playing stand alone
7. Play in VR Preview
8. Stop VR preview
9. Play in Stand alone mode
10. Press Alt+Enter
11. Notice that the VR mode no longer works

Expected: The VR mode would work in standalone and VR preview with switching between them
Result: Standalone will no longer enter the VR mode after the VR preview has been used

i have this problem UE4CC-Windows-58DC12AF4B97F057BD108FBFF569B2E9_0000

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