I believe that a stopgap solution should be to fall back to the old Android AV implementation until we can make a fix to the SDK on our end.
In SDK20, we upgraded from MediaPlayer to ExoPlayer on Android as the under-the-hood implementation for AV playback. The MediaPlayer implementation is still available in SDK20 if you pass
androidImplementation: 'MediaPlayer' into the initial status of the
Sound that you are trying to play (the second argument of
soundInstance.loadAsync()). I believe that the old implementation should fix the problem for now, but we will work on fixing this bug moving forward in the new Android implementation (since the new Android implementation provides a much better experience across devices anyway, in addition to other desirable features).
Let us know if you encounter any more issues, and we’ll follow up when fixing this issue.