Does not display the file list for packages installed with --force-acrchitecture

I noticed this after installing Lightscribe on Ubuntu 11.10.

Synaptic displays "The list of installed files is only available for installed packages" instead of the file list.
The package is indeed installed and I have used it.

To reproduce do the following:

cd /tmp
wget http://download.lightscribe.com/ls/lightscribe-1.18.24.1-linux-2.6-intel.deb
wget http://download.lightscribe.com/ls/lightscribeApplications-1.18.15.1-linux-2.6-intel.deb
sudo apt-get install ia32-libs
sudo dpkg -i --force-architecture lightscribe*
sudo ln -s /usr/lib/liblightscribe.so.1 /usr/lib32/
sudo ln -s /usr/lib/liblightscribe.so /usr/lib32/
sudo ldconfig

#run the package
/opt/lightscribeApplications/SimpleLabeler/SimpleLabeler

Now check synaptic and search for lightscribe then right click on the package and choose "properties" and click on the "installed files" tab and you will see "The list of installed files is only available for installed packages".

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: synaptic 0.75.2ubuntu8
ProcVersionSignature: Ubuntu 3.0.0-14.23-generic 3.0.9
Uname: Linux 3.0.0-14-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 1.23-0ubuntu4
Architecture: amd64
Date: Thu Dec 15 09:56:05 2011
ExecutablePath: /usr/sbin/synaptic
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Release amd64 (20111011)
SourcePackage: synaptic
UpgradeStatus: No upgrade log present (probably fresh install)