An installer created by izpack has a PacksPanel. When I select pack MYPACK, all other packs with a condition like

<pack name="SOMEPACK" id="SOMEPACK" required="no" preselected="no" condition="izpack.selected.MYPACK">
  ...

get secretly selected. They are checked, but the checkmarks are not reflected to the GUI. The checkmarks can be made visible by going one step ahead and back.

Is this a bug or am I missing something? I figured that izpack.selected.MYPACK is a variable and not a condition per se. Could that be a problem?