This is something that has been bugging me for awhile and I haven't been able to find a fix yet. Whenever I change the system volume using the hardware volume keys on my laptop, it also changes the Spotify volume (it moves the Spotify volume slider as well as the system volume slider). Is there a way to prevent this from occurring? I've searched around for awhile and haven't found anything.
This issue has occurred on all the desktop environments I've used on Arch so far. XFCE, Gnome, and Cinnamon (what I'm currently using) all suffer from this. I believe I am using pulseaudio for my audio server. I am also using the Linux Preview of Spotify which I installed from the AUR.
If someone posts a solution that works, I will be sure to add it to the Arch Wiki for others to reference.