'Desktop' > 'Background Location' flickers when changing 'Mode'

[Ads20000]

If you change the 'Mode' to something else then the 'Background Location' flickers to '(none)' for a brief moment (sometimes more than once). This shouldn't happen - quite simply, it doesn't look good!

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: gnome-tweak-tool 3.10.1-2ubuntu1
ProcVersionSignature: Ubuntu 3.13.0-24.46-generic 3.13.9
Uname: Linux 3.13.0-24-generic x86_64
NonfreeKernelModules: nvidia wl
ApportVersion: 2.14.1-0ubuntu3
Architecture: amd64
CurrentDesktop: GNOME
Date: Mon Apr 28 06:38:03 2014
InstallationDate: Installed on 2013-03-08 (415 days ago)
InstallationMedia: Ubuntu 12.04.2 LTS "Precise Pangolin" - Release amd64 (20130213)
PackageArchitecture: all
SourcePackage: gnome-tweak-tool
UpgradeStatus: Upgraded to trusty on 2014-04-13 (15 days ago)