QtCreator Not Appearing in Launcher or Alt-Tab

Since a dist-upgrade today, QtCreator no longer shows up, though the global menu integration does work.

ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: unity 6.12.0daily13.04.02ubuntu.unity.experimental.certified-0ubuntu1 [origin: LP-PPA-ubuntu-unity-experimental-prevalidation]
ProcVersionSignature: Ubuntu 3.8.0-16.26-generic 3.8.5
Uname: Linux 3.8.0-16-generic x86_64
ApportVersion: 2.9.2-0ubuntu5
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CrashDB: unity
Date: Tue Apr 2 11:46:16 2013
InstallationDate: Installed on 2012-11-04 (148 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
MarkForUpload: True
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: unity
UpgradeStatus: Upgraded to raring on 2013-02-05 (55 days ago)