maximised Software Updater looks strange when installing

[Greg A]

Steps to reproduce:
 1. Open Software Updater
 2. Maximise Window
 3. Press Install button

Result: maximised, mostly empty window (see screenshot)

Expected result: unknown. Probably resize window.

ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: update-manager 1:0.170
ProcVersionSignature: Ubuntu 3.5.0-13.14-generic 3.5.3
Uname: Linux 3.5.0-13-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.5.1-0ubuntu4
Aptdaemon:

Architecture: amd64
Date: Thu Sep 6 20:52:30 2012
DpkgHistoryLog.txt:

DpkgTerminalLog.txt:

ExecutablePath: /usr/bin/update-manager
GsettingsChanges:
 b'com.ubuntu.update-manager' b'first-run' b'false'
 b'com.ubuntu.update-manager' b'launch-time' b'1346960893'
 b'com.ubuntu.update-manager' b'show-details' b'true'
 b'com.ubuntu.update-manager' b'window-height' b'1000'
 b'com.ubuntu.update-manager' b'window-width' b'1280'
InstallationMedia: Ubuntu 10.04 "Lucid Lynx" - Alpha amd64 (20100217)
InterpreterPath: /usr/bin/python3.2mu
PackageArchitecture: all
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_GB.UTF-8
 SHELL=/bin/bash
SourcePackage: update-manager
UpgradeStatus: Upgraded to quantal on 2012-04-14 (145 days ago)