Can't reach the lowest volume

[CoolBox_1]

Hey!

I'm streaming from my iPad / iPhone X to my AppleTV 4K HDR and the last "markup" of volume does not respond.
So I can not completely turn off the volume with the volume buttons.

iPad / iPhone X and ATV 4k HDR have the latest OS and I have tried to reinstall Spotify, restarted iPad / iPhone X and ATV without any positive results.

If I play the sound in my iPad / iPhone X, I can completely turn off the sound, but not when yes, it flows to my ATV or any other Bluetooth device.

This has worked before the latest update of Spotify.