No number count on icons in launcher

[Hansen]

Ubuntu Desktop 13.04 amd64

When using the gmail webapp or “unity-mail”, there’s supposed to be a little number showing the count of unread mails, but it’s not there. If I move the icon, it gets updated and immediately shows the count.
But when i logout/in it’s gone again.

ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: unity 7.0.0daily13.04.18~13.04-0ubuntu1
ProcVersionSignature: Ubuntu 3.8.0-19.30-generic 3.8.8
Uname: Linux 3.8.0-19-generic x86_64
ApportVersion: 2.9.2-0ubuntu8
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
Date: Sun May 5 08:41:46 2013
InstallationDate: Installed on 2013-04-26 (8 days ago)
InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130424)
MarkForUpload: True
SourcePackage: unity
UpgradeStatus: No upgrade log present (probably fresh install)

[Jan Henke (jhe)]

Related to Bug #1172863, Thunderbird is also affected. This needs a SRU to fix asap.

[Saikrishna Arcot (saiarcot895)]

At least for Thunderbird, there is a fix that has to be done every time you restart the computer:
1. Move your mouse to the launcher icons area (it can either be on one of the icons or in an empty area)
2. Hold down your mouse button and move up or down. Don't hold down too long without first moving the mouse; otherwise, you'll be moving one of the icons.
3. Let go.

I'm guessing this also applies to other applications.