ADDITIONAL SYSTEM INFORMATION :
mac os catalina

A DESCRIPTION OF THE PROBLEM :
a norm application double click it title bar, it will fill screen and double click again, it will back to previous size, but java application can't back to previous size in mac os.


STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
import javafx.application.Application;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.stage.Stage;

public class App2 extends Application {

    @Override
    public void start(Stage primaryStage) throws Exception {
        
        primaryStage.setScene(new Scene(new Group(), 500,500));
        primaryStage.show();
    }
}


FREQUENCY : always