JDialog override dispose() causes hang

Once again, I bring you JDialog issues:

public class Test extends JDialog {

public Test() {
super(new JFrame());
final JButton btnNewButton = new JButton("New button");
btnNewButton.addActionListener(e -> {
dispose();
});
getContentPane().add(btnNewButton, BorderLayout.SOUTH);
setVisible(true);
}

@Override
public final void dispose() {
super.dispose();
}
}

If you remove the override method, it works. If you include, it hangs.

Start by running the supplied Test class and reproducing the hang from the JButton action listener when it calls dispose(). Compare the behavior with and without the JDialog dispose() override, then trace the relevant WindowBuilder or Swing integration entry point. Done means the override no longer hangs while closing the dialog, with regression coverage for the supplied case.

Written by the indexing model from the issue text.