JavaFX setIconified(false) does not display window - javafx

Question

I have a situation in which I have a JavaFX application that allows the primary stage to be iconified by a set of REST endpoints. Here's the application code:
public class server extends Application {
#Override
public void start(Stage primaryStage) throws Exception {
Parent root = FXMLLoader.load(getClass().getResource("/Hello.fxml"));
Scene scene = new Scene(root, 300, 275);
primaryStage.setTitle("FXML Welcome");
primaryStage.setScene(scene);
Server jettyServer = new Server(65534);
ServletContextHandler context = new ServletContextHandler(jettyServer, "/");
jettyServer.setHandler(context);
final ResourceConfig rc = new ResourceConfig().register(
new AbstractBinder() {
#Override
protected void configure() {
bind(primaryStage).to(Stage.class);
}
}
);
rc.packages("com.cognivue.jettypoc.rest");
ServletHolder jerseyServlet = new ServletHolder(new ServletContainer(rc));
jerseyServlet.setInitOrder(0);
context.addServlet(jerseyServlet, "/*");
jettyServer.start();
primaryStage.show();
}
}
Here's the REST controller code:
#Path("stagecontrol")
public class StageControl {
#Inject
private Stage primaryStage;
public StageControl() {
}
#GET
#Path("start")
public Response start() {
Platform.runLater(() ->primaryStage.setIconified(false));
return Response.ok().build();
}
#GET
#Path("stop")
public Response stop() {
Platform.runLater(() ->primaryStage.setIconified(true));
return Response.ok().build();
}
}
When I make a call to /stagecontrol/stop, the application iconifies; when I make a call to /stagecontrol/start, nothing happens. Is there something about setIconified?