Look at the attached movie.

I do a sequence of actions, which lead to the state, when focus item is wrongly reported.

We need a 2-level treeView.

1. select the last item under the middle item.
2. collapse the middle item
3. expand the middle item.
4. select the last item again.
5. collapse the root item.

I could reproduce with other cases too, but they cannot be stably reproduced.

Affected tests:
ControlsAutomatedTestSuite/javafx/scene/control/test/treeview/TreeViewTest/selectionCorrectnessOnCollapsing5Test