Sound setings display balance incorrectly

[Wiktor Nizio]

1. Change sound balance to something obvious, like 100% right, so you can hear the difference.
2. Close sound settings.
3. Open sound settings again.

Effect: You will hear that your settings have been preserved, but the balance slider will show in the middle.

ProblemType: Bug
DistroRelease: Ubuntu 21.04
Package: gnome-control-center 1:3.38.5-1ubuntu1
ProcVersionSignature: Ubuntu 5.11.0-13.14-generic 5.11.7
Uname: Linux 5.11.0-13-generic x86_64
ApportVersion: 2.20.11-0ubuntu61
Architecture: amd64
CurrentDesktop: ubuntu:GNOME
Date: Thu Apr 8 12:25:48 2021
InstallationDate: Installed on 2021-04-08 (0 days ago)
InstallationMedia: Ubuntu 21.04 "Hirsute Hippo" - Beta amd64 (20210331.1)
SourcePackage: gnome-control-center
UpgradeStatus: No upgrade log present (probably fresh install)

[Daniel van Vugt (vanvugt)]

See also bug 1910879.