Evolution - Shortcuts in context-menu are gone when using the mouse

Hi everyone,
with evolution 3.2.2 (Ubuntu 12.04) i am facing a bug in the context-menu. The context-menu (right click on a message) is showing many options. There are also shortcuts which are represented via "_".

See http://alpha-unix.de/~iceroot/ubuntu/evolution_with_shortcuts.png

When i move the mouse, the menu is disapering for a very short time, when it come back the shortcuts are no longer displayed

See http://alpha-unix.de/~iceroot/ubuntu/evolution_without_shortcuts.png

i never noticed this bug in evoltion 3.2.1

Just for the record i am also using these evoltion-packages

michael@eeebuntu:~/ubuntu-dev$ dpkg -l \*evolution\* | grep ^ii
ii evolution 3.2.2-0ubuntu1 groupware suite with mail client and organizer
ii evolution-common 3.2.2-0ubuntu1 architecture independent files for Evolution
ii evolution-data-server 3.2.2-0ubuntu1 evolution database backend server
ii evolution-data-server-common 3.2.2-0ubuntu1 architecture independent files for Evolution Data Server
ii evolution-exchange 3.2.1-0ubuntu2 Exchange plugin for the Evolution groupware suite
ii evolution-plugins 3.2.2-0ubuntu1 standard plugins for Evolution
ii evolution-plugins-experimental 3.2.2-0ubuntu1 experimental plugins for Evolution
ii evolution-webcal 2.32.0-1build1 webcal: URL handler for GNOME and Evolution
ii libevolution 3.2.2-0ubuntu1 evolution libraries

If you need further informations please feel free to ask.

Greetings

Michael

PS: i have also created an upstreambug because i guess its not an ubuntu-bug

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: evolution 3.2.2-0ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-3.8-generic 3.2.0-rc4
Uname: Linux 3.2.0-3-generic i686
ApportVersion: 1.90-0ubuntu1
Architecture: i386
Date: Tue Dec 6 15:05:31 2011
EcryptfsInUse: Yes
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release i386 (20110426)
ProcEnviron:
 PATH=(custom, no user)
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
SourcePackage: evolution
UpgradeStatus: Upgraded to precise on 2011-12-04 (2 days ago)