User-configured wallpaper setting wiped out after today's updates

[Jason S. Wagner]

jason-1204:~:% lsb_release -rd
Description: Ubuntu precise (development branch)
Release: 12.04

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While applying today's updates, my wallpaper setting (which was simply set to the time-rotating wallpapers provided with the distribution) was wiped out and set to a pure black color.

Screenshot: http://i.imgur.com/quABr.png

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: gnome-shell 3.4.0-0ubuntu2
ProcVersionSignature: Ubuntu 3.2.0-22.35-generic 3.2.14
Uname: Linux 3.2.0-22-generic x86_64
ApportVersion: 2.0-0ubuntu4
Architecture: amd64
Date: Thu Apr 5 17:45:46 2012
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Beta amd64 (20120403)
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/zsh
SourcePackage: gnome-shell
UpgradeStatus: No upgrade log present (probably fresh install)

[Jason S. Wagner (jasonswagner)]

I filed this against gnome-shell, but I just applied today's updates to a VM with Unity:

After installing the updates, the Unity bar (and dash, when exposed) turned purple.

After a reboot, the wallpaper was now black.

Would be interesting to see if other user profiles on the same machine would also be affected.

[Jason S. Wagner (jasonswagner)]

Grah, I just realized I have a completely new set of wallpapers. I guess that's why they went missing.

I would hope this would be handled more gracefully, but since the wallpapers are not going to be moved, removed, updated or replaced after release, I suppose there isn't much of a bug here.

[Jeremy Bícha (jbicha)]

Jason, there is a bug here but only for those who had their theme set to the Contest set. That set was renamed. Maybe a symlink from the old name to the new name would work.