Compile and run attached TreeViewSimpleTest.java:
Select "Controls" item, expand
Expand "Buttons" item without selection, child "PopupButton" item will have blue border, but should not (TreeView1.png)
Collapse "Buttons" item, "MenuBar" item will have blue border, but should not (TreeView2.png)
Expand "Buttons" item again, selected item will be NULL, focused item will be "PopupButton", but should not (TreeView3.png)
If click down key then next after "PopupButton" item will be selected, but should be "Buttons", because user last selection is "Controls" item and "Buttons" is next after "Controls"


Bug is reproducible on macosx and windows with javafx 2.2.5b03, 2.2.3b32, 2.2.0b21