I usually have Kontact running with no window (i.e. I close the window with Alt-F4), the only thing that shows are the icons for Kagregator and Kmail in the notification area. I can click on the icon to restore the window of Kontact.
However, whether I click on the KAkgregator or the KMail icon, it does not matter which one I choose, I always get Kontact in the view that was used previously. (Even if it's a view that has nothing to do with Kagregator or Kmail.)

Reproducible: Always

Steps to Reproduce:
1. Make the Kontacts window disappear.
2. Click on the Kagregator icon. (Or on the Kmail icon.)

Actual Results:  
Kontacts opens but ignores which icon I clicked.

Expected Results:  
Kontact should open to the view of Kagregator (or KMail), depending on what I clicked.