Exploding Alias

All code inside the skin: listening to items property and to changes of its content:

@Override protected void handleControlPropertyChanged(String p) {
    if ("ITEMS".equals(p)) {
        updateComboBoxItems();
        updateListViewItems();
    } 
    ...
} 

private void updateComboBoxItems() {
    comboBoxItems = comboBox.getItems();
    comboBoxItems = comboBoxItems == null ? FXCollections.<T>emptyObservableList() : comboBoxItems;
}

public void updateListViewItems() {
    if (listViewItems != null) {
        listViewItems.removeListener(weakListViewItemsListener);
    }
    this.listViewItems = comboBoxItems;
    listView.setItems(listViewItems);
    if (listViewItems != null) {
        listViewItems.addListener(weakListViewItemsListener);
    }
    ...
}

Now the quick fix for RT-15793 in the ComboBox itself:

private ObjectProperty<ObservableList<T>> items = new SimpleObjectProperty<ObservableList<T>>(this, "items") {
    @Override protected void invalidated() {
        // FIXME temporary fix for RT-15793. This will need to be
        // properly fixed when time permits
        ....
        if (getSkin() instanceof ComboBoxListViewSkin) {
            ComboBoxListViewSkin<?> skin = (ComboBoxListViewSkin<?>) getSkin();
            skin.updateListViewItems();
        }
    }
};

Spot the blot?

Took me a while - started with being plain confused of RT-38731 being virulent for a ComboBox as well as for a ChoiceBox: the hack above should have worked for the CombBox (ChoiceBox probably was simply forgotten).