Yeah, I hate that. Classic symptom of a scratchy encoder.

In addition to improved debounce, I'd love to see the software put a speed-limit on volume increases, so that sort of thing doesn't ever happen no matter how hard you crank the knob, deliberately or otherwise. You could have the speed limit on the upwards direction, but not the downwards direction, just in case you needed to turn the volume "right down" as someone here once said...