Matching fails with .desktop files containing Terminal=true

1. Install any two or more packages with .desktop files that contain Terminal=true — for instance, 'ipython', 'htop', or 'byobu'.
2. Open the unity dash.
3. For each application, drag its icon from the dash to the unity launcher, locking it to the launcher.
4. Close the dash.
5. Start one application using the launcher icon.
6. Start the other application using the launcher icon.
(7. Optionally, start more applications using their launcher icons.)

Expected: each launcher icon shows a white triangle indicating an open window.

Observed:
- The icon of the application launched in #5 shows two (or more) white triangles.
- The icon(s) of any application(s) launched subsequently show(s) no white triangles.
- Switching between the two (or more) open applications using the launcher or Alt+Tab (as opposed to Alt+`) is not possible.

ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: bamfdaemon 0.3.6-0ubuntu2
ProcVersionSignature: Ubuntu 3.5.0-28.47+kamal16~DellXPS-generic 3.5.7.9
Uname: Linux 3.5.0-28-generic x86_64
ApportVersion: 2.6.1-0ubuntu10
Architecture: amd64
Date: Mon Apr 15 17:04:30 2013
EcryptfsInUse: Yes
InstallationDate: Installed on 2012-10-29 (167 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
MarkForUpload: True
SourcePackage: bamf
UpgradeStatus: No upgrade log present (probably fresh install)