layout disturbed on resizing window

[mustangtyson]

Make the window small and a large white colum will appear.

ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: gwibber 3.6.0-0ubuntu1
ProcVersionSignature: Ubuntu 3.5.0-18.29-generic 3.5.7
Uname: Linux 3.5.0-18-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.6.1-0ubuntu6
Architecture: amd64
Date: Tue Nov 6 12:47:22 2012
InstallationDate: Installed on 2010-09-16 (782 days ago)
InstallationMedia: Ubuntu 10.04.1 LTS "Lucid Lynx" - Release amd64 (20100816.1)
MarkForUpload: True
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: gwibber
UpgradeStatus: Upgraded to quantal on 2012-10-19 (18 days ago)