When dragging sound to "On", switch becomes "On", but slider goes back to 0% and has to be set again

I have recently noticed that in the gnome-control-center in the Sound section that if I have something muted so that the switch next to the slider is set to "Off", and then also the slider set to 0%, that if I then drag the slider to a state where it would be "On" rather than muted, the switch becomes "On", but then the slider no matter where I drag it to returns to the beginning where it is 0% and then I have to drag it again in order to set it, so it seems that switching the switch to "On" results in it going to 0% in certain circumstances. Also please note that at no point in this process, not even when I turn the sound off do I touch the switch, only the slider.

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OS Information:

    No LSB modules are available.
    Distributor ID: Ubuntu
    Description: Ubuntu 15.10
    Release: 15.10
    Codename: wily
    Flavour: GNOME
    GNOME Version: 3.18

Package Information:

    gnome-control-center:
      Installed: 1:3.18.2-1ubuntu1~wily1
      Candidate: 1:3.18.2-1ubuntu1~wily1
      Version table:
     *** 1:3.18.2-1ubuntu1~wily1 0
            500 http://ppa.launchpad.net/gnome3-team/gnome3-staging/ubuntu/ wily/main amd64 Packages
            100 /var/lib/dpkg/status
         1:3.16.3-0ubuntu1 0
            500 http://archive.ubuntu.com/ubuntu/ wily/universe amd64 Packages
         1:3.16.2-2ubuntu1~wily5 0
            500 http://ppa.launchpad.net/gnome3-team/gnome3/ubuntu/ wily/main amd64 Packages