This is a critical bug because the user is unable to bring back the window!

@Override
    public void start(Stage stage) {
        Button button = new Button("Click to maximize");
        button.setOnAction(e -> stage.setMaximized(true));
        Rectangle2D bounds = Screen.getPrimary().getVisualBounds();
        stage.setScene(new Scene(new StackPane(button), bounds.getWidth(),
bounds.getHeight()));
        stage.show();
    }