unable to change picture-options in org.gnome.desktop.background using dconf-editor

1. Open dconf-editor.
2. Go to org.gnome.desktop.background
3. Click once on value of picture-options property to change it.
4. This is where I get my top-panel duplicated through whole screen. Upon clicking once again, everything comes back to normal, and the value is changed.

I am attaching a picture of what happens in step 4.

Also, in terminal I see:
(dconf-editor:6274): Gdk-WARNING **: Native Windows wider or taller than 65535 pixels are not supported

ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: dconf-editor 0.16.1-1
ProcVersionSignature: Ubuntu 3.11.0-5.10-generic 3.11.0
Uname: Linux 3.11.0-5-generic x86_64
ApportVersion: 2.12.1-0ubuntu3
Architecture: amd64
Date: Thu Sep 5 18:27:47 2013
InstallationDate: Installed on 2012-10-06 (334 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Beta amd64 (20120926)
MarkForUpload: True
SourcePackage: d-conf
UpgradeStatus: Upgraded to saucy on 2013-08-12 (24 days ago)