Volume slider sometimes behaves incorrectly

[robflop]

At the time of writing this, the volume slider does not behave correctly.
Occurs on master branch, not tested on latest release.

Demonstration: https://gfycat.com/valuableecstatichorsechestnutleafminer

Edit: For clarification, this doesn't seem to be a permanent issue, but rather one that's triggered by unknown actions and then remains until the app is restarted.

[kotx]

This happens to me without triggering any unknown action (just started the app).