Soundscape Palettes with no playback conditions do not activate

Soundscape Palettes with empty playback conditions fail to activate

1. Create a Soundscape Color
2. Add a looping Sound to the Color's Sound Property
3. Create a Soundscape Palette
4. Add the Soundscape Color to the Palette
5. In the Project Settings > Game > Soundscape add the new Soundscape Palette to the Set of default Soundscape Palettes
6. Play any level

Expected: Looping Sound should have been spawned
Result: Looping Sound does not spawn