Pause/resuming while an Application.LoadLevelAsync is running can cause a crash with the exception: C0000194 (possible deadlock)

To reproduce:
1. Import repro.unitypackage. It contains two scenes - a loader and target scene
2. Add the scenes to the build settings so the loader is the first scene and the target is the 2nd one
3. Build & run for WP8 (development build)
4. Press the "Load" button. A label saying "Loading" should appear
5. Before the target level is loaded press the home key. Then press the search key
6. Press back twice to return to the app
7. Crash

Not reproducible when deployed as a windows phone 8.1 app.