Windows App changes volume on iOS device when transferring playback

[jw2k_fr]

Plan

Premium

Country

USA

Device

iPhone X iOS 12.1.2

App version 8.4.79.933

Operating System

Windows 10 build 1809

1.0.96.181.gf6bc1b6b (Windows Store version)

My Question or Issue

When transferring playback from my phone to my desktop, Spotify will change the volume level of the iOS device to match that of the desktop.  Whilst this might be by design, to allow you to change the volume of that other device when using the phone as a remote, it is not reliably implemented, and most of the time, when I go back to my phone to listen to something, the phone will playt at full volume - a nice way to either damage my hearing or my headphones.

This problem has been going on for over a year, but only recently have I tied down what causes it.  Please fix it.

[jw2k_fr]

Ticket created with Spotify support.  Issue is under investigation.  Update as, and when, I hear back