Task t = new Task() {

    @Override
    protected Object call() throws Exception {

        Platform.runLater(() -> {
            try {

                new SisgeFX().start();
            } catch (IOException ex) {
                Logger.getLogger(LoginController.class.getName()).log(Level.SEVERE, null, ex);
            }
        });
        return null;
    }
};
region.visibleProperty().bind(t.runningProperty());
pi.visibleProperty().bind(t.runningProperty());
Thread th = new Thread(t);
th.start();

@FXML
private void sysLogin() {
String user = ctfUserLogin.getText();
String pass = ctfPassLogin.getText();
LoginDAO loginDAO = DAOFactory.make(LoginDAO.class);
Login login = loginDAO.getLogin(user, pass);

if (login != null) {
    runThread(); // aqui chamo a Thread postado acima.
    ctfPassLogin.setStyle(null);
    ctfUserLogin.setStyle(null);
} else {
    ctfPassLogin.clear();
    ctfUserLogin.clear();
    ctfPassLogin.setStyle("-fx-border-color:red;");
    ctfUserLogin.setStyle("-fx-border-color:red;");
    //new ShakeTransition(vBox).play();
    new WobbleTransition(vBox).play();
    //new TadaTransition(vBox).play();
}