App closes when loading a sublevel that contains a nav mesh when Async loading is enabled

Android App appears to close when using a combination of nav mesh volumes, async loading and Gear VR.

1. Download the attached project
2. Open the project
3. Open the android settings
4. Configure for android
5. Package project for Android (ETC2)
6. Install on to Gear VR ready device
7. Open app

Result: App closes once the sublevel containing the nav mesh is loaded
Expected: The level would be loaded and the app would continue to run

Also reproduces on Windows if the project has this settings in DefaultEngine.ini

[/Script/Engine.StreamingSettings]
s.AsyncLoadingThreadEnabled=True
s.EventDrivenLoaderEnabled=False