Sound Launcher Stays Minimize Upon Additional Launches

I launch "Sound Settings" by going to the speaker icon by the clock and then I click "Sound Settings".

After doing this, if that window become minimized, and I try to launch "Sound Settings" again (in the manner described above, the minimized window should regain focus, but it does not.

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: unity-control-center 15.04.0+16.04.20171130-0ubuntu1
ProcVersionSignature: Ubuntu 4.15.0-46.49~16.04.1-generic 4.15.18
Uname: Linux 4.15.0-46-generic x86_64
NonfreeKernelModules: nvidia_uvm nvidia_drm nvidia_modeset nvidia
ApportVersion: 2.20.1-0ubuntu2.18
Architecture: amd64
CurrentDesktop: Unity
Date: Wed Mar 27 11:49:44 2019
InstallationDate: Installed on 2019-01-07 (79 days ago)
InstallationMedia: Ubuntu 16.04.5 LTS "Xenial Xerus" - Release amd64 (20180731)
SourcePackage: unity-control-center
UpgradeStatus: No upgrade log present (probably fresh install)