FULL PRODUCT VERSION :
java version "1.8.0_92"
Java(TM) SE Runtime Environment (build 1.8.0_92-b14)
Java HotSpot(TM) 64-Bit Server VM (build 25.92-b14, mixed mode)

ADDITIONAL OS VERSION INFORMATION :
Windows 7
Microsoft Windows [Version 6.1.7601]

A DESCRIPTION OF THE PROBLEM :
The Swing content of a SwingNode does not update properly after being resized, when direct 3D is disabled (Java system property -Dsun.java2d.d3d=false). We need this property to work around other bugs.

The provided test case is a slight modification of the example in the javadoc of SwingNode, these changes were applied:
- it does not use a JButton, but uses a JPanel
- it disables direct 3D using sun.java2d.d3d=false

If either of those modifications is reverted, resizing does work.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
- Start the attached sample
- Resize the window

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
The Swing content of the SwingNode resizes and repaints when the JavaFX node is resized
ACTUAL -
The Swing content does not resize, or even turns completely black or grey.

REPRODUCIBILITY :
This bug can be reproduced always.

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

  @Override
  public void start(Stage stage) {
    final SwingNode swingNode = new SwingNode();
    createAndSetSwingContent(swingNode);

    StackPane pane = new StackPane();
    pane.getChildren().add(swingNode);

    stage.setScene(new Scene(pane, 100, 50));
    stage.show();
  }

  private void createAndSetSwingContent(final SwingNode swingNode) {
    SwingUtilities.invokeLater(new Runnable() {
      @Override
      public void run() {
        JPanel panel = new JPanel();
        panel.setBackground(java.awt.Color.BLUE);
        panel.setBorder(BorderFactory.createLineBorder(Color.CYAN, 5));
        swingNode.setContent(panel);

        // Using the original content from the Javadoc example does work for some reason.
// swingNode.setContent(new JButton("Click me!"));
      }
    });
  }

  public static void main(String[] args) {
    // When this property is set to true (the default), resizing the window does resize the Swing content.
    System.setProperty("sun.java2d.d3d", "false");

    launch(args);
  }
}
---------- END SOURCE ----------

CUSTOMER SUBMITTED WORKAROUND :
Move the window (by dragging the title bar). The content is now refreshed properly.