visual artifacts for volume (white background all of sudden)

[Martin Mrazik]

I'm not 100% sure if I have seen this with 5.1 but I have this all the time after upgrade to 5.2 today.
The screenshot should be self-explanatory. Instead of having the default, grey background there is a weird whie rectangle.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: indicator-sound 0.8.0.0-0ubuntu3
ProcVersionSignature: Ubuntu 3.2.0-14.23-generic-pae 3.2.3
Uname: Linux 3.2.0-14-generic-pae i686
ApportVersion: 1.91-0ubuntu1
Architecture: i386
Date: Mon Feb 6 17:33:08 2012
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111012)
SourcePackage: indicator-sound
UpgradeStatus: Upgraded to precise on 2012-01-23 (14 days ago)