@johnlea - it seems you are not addressing the issue, perhaps because I was unclear. The problem is not that phones don't indicate a change of volume, but rather that they don't indicate they are changing the volume of a paired bluetooth device.
So this bug is a request for a visual differentiation between the UI shown for on-device volume, and off-device-bluetooth volume.
@johnlea - it seems you are not addressing the issue, perhaps because I was unclear. The problem is not that phones don't indicate a change of volume, but rather that they don't indicate they are changing the volume of a paired bluetooth device.
So this bug is a request for a visual differentiation between the UI shown for on-device volume, and off-device- bluetooth volume.