Audio Volumes & Ambient Sounds not working if volume multiplier set to 0

When i am using anything but 0 the sounds are handled as told in the UE DOCS and many youtube videos.
But when using 0 (for inside volume and/or outside volume (inside audio volume settings)) nothing plays or it starts but doesnt go back.

  • i did enable “ambient” in the sound class
  • there is a ambient sound in a audio volume in the level
  • i did rebuild geometry

here is a clear video of how to reproduce the bug