Selected user wallpaper doesn't change for slideshow wallpaper

When a user has a 'slideshow' (changing) wallpaper selected, it does not show up in the user selector in lightdm.
It would be great if the current wallpaper from the sideshow is shown - or alternatly, the last shown wallpaper.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: lightdm 1.1.1-0ubuntu3
ProcVersionSignature: Ubuntu 3.2.0-12.20-generic 3.2.2
Uname: Linux 3.2.0-12-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 1.91-0ubuntu1
Architecture: amd64
Date: Mon Jan 30 07:51:45 2012
EcryptfsInUse: Yes
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha amd64 (20120112)
ProcEnviron:
 LANGUAGE=en_AU:en
 PATH=(custom, no user)
 LANG=en_AU.UTF-8
 SHELL=/bin/bash
SourcePackage: lightdm
UpgradeStatus: Upgraded to precise on 2012-01-29 (0 days ago)