[saucy] gnome-panel does not start automatically on gnome-session-flashback login

[Christian S.]

The gnome-panel in saucy does not start automatically after login into gnome-session-flashback resulting in a rather limited desktop experience.
(I blamed the gnome flashback package instead of gnome-panel because it is possible to launch it manually in flashback mode.)

Steps to reproduce:
- install sauce daily build from 11.9.13
- update system
- install gnome-session-flashback
- logout and login into gnome flashback -> no panel

$ lsb_release -rd
Description: Ubuntu Saucy Salamander (development branch)
Release: 13.10

$ apt-cache policy gnome-session-flashback
gnome-session-flashback:
  Installed: 1:3.6.2-0ubuntu14
  Candidate: 1:3.6.2-0ubuntu14
  Version table:
 *** 1:3.6.2-0ubuntu14 0
        500 http://de.archive.ubuntu.com/ubuntu/ saucy/universe i386 Packages
        100 /var/lib/dpkg/status

$ apt-cache policy gnome-panel
gnome-panel:
  Installed: 1:3.6.2-0ubuntu14
  Candidate: 1:3.6.2-0ubuntu14
  Version table:
 *** 1:3.6.2-0ubuntu14 0
        500 http://de.archive.ubuntu.com/ubuntu/ saucy/universe i386 Packages
        100 /var/lib/dpkg/status

ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: gnome-session-flashback 1:3.6.2-0ubuntu14
ProcVersionSignature: Ubuntu 3.11.0-7.13-generic 3.11.0
Uname: Linux 3.11.0-7-generic i686
ApportVersion: 2.12.1-0ubuntu3
Architecture: i386
Date: Thu Sep 12 12:38:56 2013
GsettingsChanges:

InstallationDate: Installed on 2013-09-11 (0 days ago)
InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Alpha i386 (20130911)
MarkForUpload: True
PackageArchitecture: all
SourcePackage: gnome-panel
UpgradeStatus: No upgrade log present (probably fresh install)

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.