FULL PRODUCT VERSION :
Java(TM) SE Runtime Environment (build 9-ea+174)
Java HotSpot(TM) 64-Bit Server VM (build 9-ea+174, mixed mode)

ADDITIONAL OS VERSION INFORMATION :
Microsoft Windows [Version 6.1.7601]

EXTRA RELEVANT SYSTEM CONFIGURATION :
Japanese Environment

A DESCRIPTION OF THE PROBLEM :
When I input Japanese Text with IME to JTextArea on SwingNode, a small input window is shown like JDK-8090267.
So, on-the-spot does not work with Swing component embedded on SwingNode.


STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
1. Execute the attached sample code
2. Input text with IME on


EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
The on-the-spot behavior.
ACTUAL -
The root-window behavior.

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
public class SwingNodeTest extends Application {

    public static void main(String[] args) {
        Application.launch(args);
    }

    @Override
    public void start(Stage primaryStage) {
        primaryStage.setTitle("TextArea Test");
        Group root = new Group();
        Scene scene = new Scene(root, 600, 330, Color.WHITE);

        SwingNode swingNode = new SwingNode();
        root.getChildren().add(swingNode);

        final JTextArea jTextArea = new JTextArea();
        try {
            SwingUtilities.invokeAndWait(() -> {
                jTextArea.setLineWrap(true);
                jTextArea.setColumns(10);
                jTextArea.setRows(10);
            });
        } catch (InterruptedException | InvocationTargetException ex) {
            ex.printStackTrace();
        }
        
        swingNode.setContent(jTextArea);
        primaryStage.setScene(scene);
        primaryStage.show();
    }
---------- END SOURCE ----------