My Question or Issue
1. I listen music with Spotify.
2. Suddenly a message comes in,
2a. the volume of the music gets reduced
2b. the notification dinnnng sounds can be heard.
Expected result: the volume comes back
Actual result: the volume remains reduced until I go to app switcher and come back to Spotify
Support for my iPhone says, this is an app problem, no OS problem.
I need a solution.