How to reproduce:
1. Open the attached project "VR Playground 833706v2 .zip"
2. Open and play MainMenu scene
3. After scene fades in, sound doesn't play
4. Select File menu
5. Sound starts playing
6. Open VRDeviceManager.cs script
7. Comment 55th line " VRSettings.loadedDevice = VRDeviceType.Oculus;"
8. Play the scene again and notice that sound fades in with he scene

Actual result: setting local device to Oculus makes sound play only when one of the title bar menus is open
Expected result: setting local device to Oculus shouldn't make sound play only when one of the title bar menus is open

Note: I have set local device to PlayStationVR and it worked fine.

Reproducible: 5.5.0b1, 5.5.0b5

NOT REPRODUCIBLE: The attached project is too old, after solving compiling issues, open and play MainMenu scene, sounds always play, so no repro.