A DESCRIPTION OF THE REQUEST :
When a custom cursor is created in the swing node it is node correctly converted to JavaFX Cursor.
The issue is that there is no case for value Cursor.CUSTOM_CURSOR in the switch-case of th method static javafx.scene.Cursor embedCursorToCursor(final Cursor cursor).

The missing case is:
case Cursor.CUSTOM_CURSOR:
                return createImageCursor(cursor);

The body of the createImageCursor is:
private static ImageCursor createImageCursor(final Cursor cursor)
    {
        Icon cursorIcon = null;
        try
        {
            final Field field = cursor.getClass().getSuperclass().getDeclaredField("image");
            field.setAccessible(true);
            final Image cursorImage = (Image) field.get(cursor);

            if(cursorImage != null)
                cursorIcon = new ImageIcon(cursorImage);
        }
        catch(final NoSuchFieldException | IllegalAccessException e)
        {
            e.printStackTrace();
        }
        return new ImageCursor(ImageConverter.swingIconToImage(cursorIcon));
    }

Because field image is private I used reflection to access it but you should be able to do it without reflection.


JUSTIFICATION :
Custom cursor are not currently supported in JavaFx SwingNode.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
I would see custom cursor when I display a swing control with a custom cursor.
ACTUAL -
The default cursor is displayed instead the custom one.

---------- BEGIN SOURCE ----------
public class SwingNodeSample extends Application
{
    @Override
    public void start(Stage stage)
    {
        final SwingNode swingNode = new SwingNode();

        createSwingContent(swingNode);

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

        stage.setTitle("Swing in JavaFX");
        stage.setScene(new Scene(pane, 250, 150));
        stage.show();
    }

    private void createSwingContent(final SwingNode swingNode)
    {
        SwingUtilities.invokeLater(() ->
        {
            JPanel content = new JPanel();
            content.setBackground(Color.BLUE);
            createCustomCursor(content);
            swingNode.setContent(content);
        });
    }

    private void createCustomCursor(JPanel panel)
    {
        Toolkit toolkit = Toolkit.getDefaultToolkit();
        String path = getClass().getResource("/ca/rheinmetall/java_fx/ui/javafx/drag_move_cursor.png").getFile();
        Image image = new ImageIcon(path).getImage();
        Cursor cursor = toolkit.createCustomCursor(image, new Point(0, 0), "img");
        panel.setCursor(cursor);
    }
}
---------- END SOURCE ----------

CUSTOMER SUBMITTED WORKAROUND :
see description field.