TAdvOutlookList - Items "jumping" randomly

Hi all, 


I tried to use TAdvOutlookList in a new VCL Application (32bit) developed in XE2. When clicking and selecting different items in the lower area of the list the items below the selection start to "jump" randomly and the associated ItemObjects seem to be lost. 

Since it is quite difficult to explain I attached a video ;) 

The only code attached to the list is the onGetListHint event handler. Is this a known issue or did I just implement it wrong? 

Regards 
Markus

http://www.new-frontiers.de/AdvOutlookList.mp4