Yeah, that it exactly what is happening, but it’s not Spotify’s fault. What spotify and other music apps want is the default behavior of Apple’s music services. The device has a strangle hold on the volume and no API allowing good software sound control. Spotify can’t force the device to do something that Apple forbids in order to force project their own music service onto users.

Meanwhile, in the other OS, we already have a desktop like sound mixer including multiple output control and per app control. iOS is a worse bad joke every day. Second only to Windows.