I've a simple Stage, with a TextField and a ComboBox (see below). If I run them separatedly everything works fine. But if I launch the stage after launching my application (a javafx Stage and a helper Swing JFrame) the ComboBox will lose its selected value when a put the focus anywhere else (for example in the TextField). The stackTrace of the selection and the focus lost are these (I think that the setTextFromTextFieldIntoComboBoxValue could be a clue..)

REAL SELECTION

java.lang.Exception: Changed value:'Combo content:3'
        at etr01.avm.fxBrowser.controlPanel.FXControlPanel$3.changed(FXControlPanel.java:153)
        at etr01.avm.fxBrowser.controlPanel.FXControlPanel$3.changed(FXControlPanel.java:148)
        at com.sun.javafx.binding.ExpressionHelper$Generic.fireValueChangedEvent(Unknown Source)
        at com.sun.javafx.binding.ExpressionHelper.fireValueChangedEvent(Unknown Source)
        at javafx.beans.property.ReadOnlyObjectWrapper$ReadOnlyPropertyImpl.fireValueChangedEvent(Un
known Source)
        at javafx.beans.property.ReadOnlyObjectWrapper.fireValueChangedEvent(Unknown Source)
        at javafx.beans.property.ObjectPropertyBase.markInvalid(Unknown Source)
        at javafx.beans.property.ObjectPropertyBase.set(Unknown Source)
        at javafx.scene.control.SelectionModel.setSelectedItem(Unknown Source)
        at javafx.scene.control.ComboBox$ComboBoxSelectionModel$1.invalidated(Unknown Source)
        at com.sun.javafx.binding.ExpressionHelper$SingleInvalidation.fireValueChangedEvent(Unknown
Source)
        at com.sun.javafx.binding.ExpressionHelper.fireValueChangedEvent(Unknown Source)
        at javafx.beans.property.ReadOnlyIntegerWrapper$ReadOnlyPropertyImpl.fireValueChangedEvent(U
nknown Source)
        at javafx.beans.property.ReadOnlyIntegerWrapper.fireValueChangedEvent(Unknown Source)
        at javafx.beans.property.IntegerPropertyBase.markInvalid(Unknown Source)
        at javafx.beans.property.IntegerPropertyBase.set(Unknown Source)
        at javafx.scene.control.SelectionModel.setSelectedIndex(Unknown Source)
        at javafx.scene.control.SingleSelectionModel.updateSelectedIndex(Unknown Source)
        at javafx.scene.control.SingleSelectionModel.select(Unknown Source)
        at com.sun.javafx.scene.control.skin.ComboBoxListViewSkin$8.invalidated(Unknown Source)
        at com.sun.javafx.binding.ExpressionHelper$Generic.fireValueChangedEvent(Unknown Source)
        at com.sun.javafx.binding.ExpressionHelper.fireValueChangedEvent(Unknown Source)
        at javafx.beans.property.ReadOnlyIntegerWrapper$ReadOnlyPropertyImpl.fireValueChangedEvent(U
nknown Source)
        at javafx.beans.property.ReadOnlyIntegerWrapper.fireValueChangedEvent(Unknown Source)
        at javafx.beans.property.IntegerPropertyBase.markInvalid(Unknown Source)
        at javafx.beans.property.IntegerPropertyBase.set(Unknown Source)
        at javafx.scene.control.SelectionModel.setSelectedIndex(Unknown Source)
        at javafx.scene.control.MultipleSelectionModelBase.select(Unknown Source)
        at javafx.scene.control.MultipleSelectionModelBase.clearAndSelect(Unknown Source)
        at com.sun.javafx.scene.control.behavior.ListCellBehavior.simpleSelect(Unknown Source)
        at com.sun.javafx.scene.control.behavior.ListCellBehavior.doSelect(Unknown Source)
        at com.sun.javafx.scene.control.behavior.ListCellBehavior.mousePressed(Unknown Source)
        at com.sun.javafx.scene.control.skin.SkinBase$4.handle(Unknown Source)
        at com.sun.javafx.scene.control.skin.SkinBase$4.handle(Unknown Source)
        at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(Unknown Source)
        at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(Unknown Source)
        at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(Unknown Source)
        at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(Unknown Source)
        at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(Unknown Source)
        at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(Unknown Source)
        at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(Unknown Source)
        at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(Unknown Source)
        at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(Unknown Source)
        at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(Unknown Source)
        at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(Unknown Source)
        at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(Unknown Source)
        at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(Unknown Source)
        at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(Unknown Source)
        at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(Unknown Source)
        at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(Unknown Source)
        at com.sun.javafx.event.EventUtil.fireEventImpl(Unknown Source)
        at com.sun.javafx.event.EventUtil.fireEvent(Unknown Source)
        at javafx.event.Event.fireEvent(Unknown Source)
        at javafx.scene.Scene$MouseHandler.process(Unknown Source)
        at javafx.scene.Scene$MouseHandler.process(Unknown Source)
        at javafx.scene.Scene$MouseHandler.access$1900(Unknown Source)
        at javafx.scene.Scene.impl_processMouseEvent(Unknown Source)
        at javafx.scene.Scene$ScenePeerListener.mouseEvent(Unknown Source)
        at com.sun.javafx.tk.quantum.GlassViewEventHandler.handleMouseEvent(Unknown Source)
        at com.sun.glass.ui.View.handleMouseEvent(Unknown Source)
        at com.sun.glass.ui.View.notifyMouse(Unknown Source)
        at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
        at com.sun.glass.ui.win.WinApplication.access$100(Unknown Source)
        at com.sun.glass.ui.win.WinApplication$2$1.run(Unknown Source)
        at java.lang.Thread.run(Unknown Source)


FOCUS LOST



java.lang.Exception: Changed value:''
12:13:08 20/06/12 [GEN] SEVERE Uncaught exception not generated, too many exceptions
        at etr01.avm.fxBrowser.controlPanel.FXControlPanel$3.changed(FXControlPanel.java:153)
        at etr01.avm.fxBrowser.controlPanel.FXControlPanel$3.changed(FXControlPanel.java:148)
        at com.sun.javafx.binding.ExpressionHelper$Generic.fireValueChangedEvent(Unknown Source)
        at com.sun.javafx.binding.ExpressionHelper.fireValueChangedEvent(Unknown Source)
        at javafx.beans.property.ReadOnlyObjectWrapper$ReadOnlyPropertyImpl.fireValueChangedEvent(Un
known Source)
        at javafx.beans.property.ReadOnlyObjectWrapper.fireValueChangedEvent(Unknown Source)
        at javafx.beans.property.ObjectPropertyBase.markInvalid(Unknown Source)
        at javafx.beans.property.ObjectPropertyBase.set(Unknown Source)
        at javafx.scene.control.SelectionModel.setSelectedItem(Unknown Source)
        at javafx.scene.control.ComboBox$2.changed(Unknown Source)
        at com.sun.javafx.binding.ExpressionHelper$Generic.fireValueChangedEvent(Unknown Source)
        at com.sun.javafx.binding.ExpressionHelper.fireValueChangedEvent(Unknown Source)
        at javafx.beans.property.ObjectPropertyBase.fireValueChangedEvent(Unknown Source)
        at javafx.beans.property.ObjectPropertyBase.markInvalid(Unknown Source)
        at javafx.beans.property.ObjectPropertyBase.set(Unknown Source)
        at javafx.scene.control.ComboBoxBase.setValue(Unknown Source)
        at com.sun.javafx.scene.control.skin.ComboBoxListViewSkin.setTextFromTextFieldIntoComboBoxVa
lue(Unknown Source)
        at com.sun.javafx.scene.control.skin.ComboBoxListViewSkin.access$200(Unknown Source)
        at com.sun.javafx.scene.control.skin.ComboBoxListViewSkin$5.changed(Unknown Source)
        at com.sun.javafx.scene.control.skin.ComboBoxListViewSkin$5.changed(Unknown Source)
        at com.sun.javafx.binding.ExpressionHelper$SingleChange.fireValueChangedEvent(Unknown Source
)
        at com.sun.javafx.binding.ExpressionHelper.fireValueChangedEvent(Unknown Source)
        at javafx.beans.property.ReadOnlyBooleanPropertyBase.fireValueChangedEvent(Unknown Source)
        at javafx.scene.Node$FocusedProperty.notifyListeners(Unknown Source)
        at javafx.scene.Node.setFocused(Unknown Source)
        at com.sun.javafx.scene.control.FocusableTextField.setFakeFocus(Unknown Source)
        at com.sun.javafx.scene.control.skin.ComboBoxListViewSkin$2.changed(Unknown Source)
        at com.sun.javafx.scene.control.skin.ComboBoxListViewSkin$2.changed(Unknown Source)
        at com.sun.javafx.binding.ExpressionHelper$Generic.fireValueChangedEvent(Unknown Source)
        at com.sun.javafx.binding.ExpressionHelper.fireValueChangedEvent(Unknown Source)
        at javafx.beans.property.ReadOnlyBooleanPropertyBase.fireValueChangedEvent(Unknown Source)
        at javafx.scene.Node$FocusedProperty.notifyListeners(Unknown Source)
        at javafx.scene.Scene$14.invalidated(Unknown Source)
        at javafx.beans.property.ObjectPropertyBase.markInvalid(Unknown Source)
        at javafx.beans.property.ObjectPropertyBase.set(Unknown Source)
        at javafx.scene.Scene$KeyHandler.setFocusOwner(Unknown Source)
        at javafx.scene.Scene$KeyHandler.requestFocus(Unknown Source)
        at javafx.scene.Scene$KeyHandler.access$2400(Unknown Source)
        at javafx.scene.Scene.requestFocus(Unknown Source)
        at javafx.scene.Node.requestFocus(Unknown Source)
        at com.sun.javafx.scene.control.behavior.TextFieldBehavior.mousePressed(Unknown Source)
        at com.sun.javafx.scene.control.skin.SkinBase$4.handle(Unknown Source)
        at com.sun.javafx.scene.control.skin.SkinBase$4.handle(Unknown Source)
        at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(Unknown Source)
        at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(Unknown Source)
        at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(Unknown Source)
        at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(Unknown Source)
        at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(Unknown Source)
        at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(Unknown Source)
        at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(Unknown Source)
        at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(Unknown Source)
        at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(Unknown Source)
        at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(Unknown Source)
        at com.sun.javafx.event.EventUtil.fireEventImpl(Unknown Source)
        at com.sun.javafx.event.EventUtil.fireEvent(Unknown Source)
        at javafx.event.Event.fireEvent(Unknown Source)
        at javafx.scene.Scene$MouseHandler.process(Unknown Source)
        at javafx.scene.Scene$MouseHandler.process(Unknown Source)
        at javafx.scene.Scene$MouseHandler.access$1900(Unknown Source)
        at javafx.scene.Scene.impl_processMouseEvent(Unknown Source)
        at javafx.scene.Scene$ScenePeerListener.mouseEvent(Unknown Source)
        at com.sun.javafx.tk.quantum.GlassViewEventHandler.handleMouseEvent(Unknown Source)
        at com.sun.glass.ui.View.handleMouseEvent(Unknown Source)
        at com.sun.glass.ui.View.notifyMouse(Unknown Source)
        at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
        at com.sun.glass.ui.win.WinApplication.access$100(Unknown Source)
        at com.sun.glass.ui.win.WinApplication$2$1.run(Unknown Source)
        at java.lang.Thread.run(Unknown Source)



Stage stage = new Stage();
// workaround for RT-10714
stage.setWidth(640);
stage.setHeight(800);
stage.setTitle("Scenic View");
final VBox g = new VBox();
g.getChildren().add(new TextField());
final ObservableList<String> citems = FXCollections
.observableArrayList();
for (int i = 0; i < 10; i++) {
citems.add("Combo content:" + i);
}
final ComboBox<String> comboTest = new ComboBox<String>();
comboTest.setItems(citems);
comboTest.setPrefWidth(250);
comboTest.getSelectionModel().selectedItemProperty()
.addListener(new ChangeListener<String>() {

@Override
public void changed(
final ObservableValue<? extends String> arg0,
final String arg1, final String newValue) {
new Exception("Changed value:'" + newValue + "'").printStackTrace();
}
});
g.getChildren().add(comboTest);
stage.setScene(new Scene(g));
stage.show();