Item focus changes affected by expanding or collapsing items. Testing source from: http://docs.oracle.com/javafx/2/ui_controls/tree-view.htm#BABJGGGF.

1. Expand and select "Sales Department"
2, Expand "IT Support"

You can see the focus is shifted to "Michael Brown", instead of the original "Sales Department".

Sorry I cannot attach screen images to show the effect.

The problem is in TreeView#TreeViewFocusModel class. See following comment for suggested fix marked by tony_lai.