This bug was fixed in the package unity-control-center - 15.04.0+16.04.20170214-0ubuntu2
--------------- unity-control-center (15.04.0+16.04.20170214-0ubuntu2) xenial; urgency=medium
[ Andrea Azzarone ] * sound: Discard selection-changed events that are not triggered by the user (lp: #1716359)
-- Sebastien Bacher <email address hidden> Tue, 31 Oct 2017 16:50:03 +0100
This bug was fixed in the package unity-control- center - 15.04.0+ 16.04.20170214- 0ubuntu2
--------------- center (15.04. 0+16.04. 20170214- 0ubuntu2) xenial; urgency=medium
unity-control-
[ Andrea Azzarone ]
* sound: Discard selection-changed events that are not triggered
by the user (lp: #1716359)
-- Sebastien Bacher <email address hidden> Tue, 31 Oct 2017 16:50:03 +0100