Empathy doesn't open when clicking messages -> chat in system tray

Whenever I click the message-icon in the top (next to the clock / battery status) systemtray, and select "chat", i expect Empathy to open. Preferably the chat-window, not the contactlist.

If empathy is not yet started, the contact list opens up. This is as expected.

If empathy is already open, but minimalized, neither the contact list nor the chat window opens. I expect the chat window to open if its minimalized, or the contact list, if the chat window is not yet opened.

This is my first bugreport, so please inform me if i've missed something.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: unity 5.18.0-0ubuntu2
ProcVersionSignature: Ubuntu 3.2.0-37.58-generic 3.2.35
Uname: Linux 3.2.0-37-generic x86_64
ApportVersion: 2.0.1-0ubuntu17.1
Architecture: amd64
CompizPlugins: [core,composite,opengl,compiztoolbox,decor,vpswitch,snap,mousepoll,resize,place,move,wall,grid,regex,imgpng,session,gnomecompat,animation,fade,unitymtgrabhandles,workarounds,scale,expo,ezoom,unityshell]
Date: Wed Feb 20 16:09:42 2013
EcryptfsInUse: Yes
InstallationMedia: Ubuntu 12.04.1 LTS "Precise Pangolin" - Release amd64 (20120823.1)
MarkForUpload: True
SourcePackage: unity
UpgradeStatus: No upgrade log present (probably fresh install)