"Installed Software" doesn't update the screen when clicked from "Get Software".

[Stenten]

Steps to reproduce:

1) Start Lubuntu Software Center.
2) Search for a package you don't have installed (I've used vlc and firefox).
3) Click "Installed Software". It shows you all the packages installed on your system as it should.
4) Click "Get Software" again. It displays as it should.
5) Click "Installed Software". You'll see it presents the same screen as "Get Software" did. Basically clicking "Installed Software" is still giving you the old "Get Software" content.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: lubuntu-software-center 0.0.4-0ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-17.27-generic 3.2.6
Uname: Linux 3.2.0-17-generic i686
ApportVersion: 1.94-0ubuntu1
Architecture: i386
Date: Sat Mar 3 12:31:42 2012
InstallationMedia: Lubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111012)
PackageArchitecture: all
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: lubuntu-software-center
UpgradeStatus: Upgraded to precise on 2012-03-03 (0 days ago)

[Launchpad Janitor (janitor)]

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