import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.ScrollPane;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;


public class Main extends Application{

  /**
   * @param args
   */
  public static void main(String[] args) {
    launch(args);
  }

  @Override
  public void start(Stage primaryStage) throws Exception {
    primaryStage.setTitle("Scroll-Pane-Bug!");
    ScrollPane sp = new ScrollPane();
    VBox content = new VBox();
    
    for(int i=0; i<1000; i++){
      Button b = new Button(String.valueOf(i));
      b.setPrefSize(200, 200);
      
      content.getChildren().add(b);
    }
    
    sp.setContent(content);
    
    primaryStage.setScene(new Scene(sp, 400, 400));
    primaryStage.show();
  }
}