Disable topmost audio layer mutes all lower layers

I don't know if it is a bug or not. In case it is not considered a bug then consider it as a feature request.
When I have an audio track with more than one layer if I disable the top most layer I expect to hear the lower one as it is not disabled but the disabled layer mutes all the track.
What do you think about it?
When I have an audio track with more than one layer if I disable the top most layer I expect to hear the lower one as it is not disabled but the disabled layer mutes all the track.
What do you think about it?