No applications show in Overview with today's Ubuntu GNOME daily image

Originally reported at https://plus.google.com/106852293956585344466/posts/5kR7ozuiaRp

Run today's Ubuntu GNOME Saucy daily image.

In the live session, no applications show in the Activities Overview in the All Applications area or in the "dash" sidebar.

Manually started apps (from Alt+F2 or by opening a terminal first with Ctrl+Alt+T) do show up in the Activities Overview as running apps.

See this from ~/.cache/gdm/session.log:

Window manager warning: Log level 8: gmenu_tree_get_root_directory: assertion 'tree->loaded' failed
    JS ERROR: !!! Exception was: TypeError: root is null
    JS ERROR: !!! message = '"root is null"'
    JS ERROR: !!! fileName = '"/usr/share/gnome-shell/js/ui/appDisplay.js"'
    JS ERROR: !!! lineNumber = '436'
    JS ERROR: !!! stack = '"()@/usr/share/gnome-shell/js/ui/appDisplay.js:436
wrapper()@/usr/share/gjs-1.0/lang.js:213
_runDeferredWork("2")@/usr/share/gnome-shell/js/ui/main.js:697
_runBeforeRedrawQueue()@/usr/share/gnome-shell/js/ui/main.js:712
()@/usr/share/gnome-shell/js/ui/main.js:721
"'

ProblemType: Bug
DistroRelease: Ubuntu 13.10
Package: gnome-shell 3.8.2-1ubuntu1 [modified: usr/share/glib-2.0/schemas/10_gnome-shell.gschema.override]
ProcVersionSignature: Ubuntu 3.9.0-4.9-generic 3.9.4
Uname: Linux 3.9.0-4-generic i686
ApportVersion: 2.10.2-0ubuntu1
Architecture: i386
CasperVersion: 1.333
Date: Tue Jun 11 04:12:45 2013
DisplayManager: gdm
GsettingsChanges:

LiveMediaBuild: Ubuntu-GNOME 13.10 "Saucy Salamander" - Alpha i386 (20130610)
MarkForUpload: True
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: gnome-shell
UpgradeStatus: No upgrade log present (probably fresh install)