JavaFX Stage not fully loaded - javafx

Question

I have this whole mess of Controls and Transitions in the Scene, and whenever an error or message is made, I call FormBuilder.say(String x).
The sample included doesn't error as much, because it's empty. But when all the stuff are active, the pop up from FormBuilder.say(String x) comes out as a mess.
If I wait long enough, attempt to interact, or if I minimize then restore the Stage, it loads properly. But many times, it's just blank.
My laptop runs Ubuntu 15.10, with approx 2GB RAM. No Video Card.
Included is a screen cap of the messy picture.
Included is the code that's affected during the bug. I've striped out some of the less suspected parts. (EDITED)
package solo;
import javafx.animation.Animation;
import javafx.animation.TranslateTransition;
import javafx.application.Application;
import javafx.beans.value.ChangeListener;
import javafx.beans.value.ObservableValue;
import javafx.geometry.Pos;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.layout.Pane;
import javafx.scene.layout.VBox;
import javafx.scene.paint.Color;
import javafx.scene.shape.Rectangle;
import javafx.scene.text.Text;
import javafx.stage.Stage;
import javafx.stage.StageStyle;
import javafx.stage.Window;
import javafx.util.Duration;
public class FormBuilder extends Application{
Stage ps;
public FormBuilder(){
}
public void begin(String[] args){
launch(args);
}
public void start(Stage primaryStage) {
ps = primaryStage;
ps.setTitle("E-VIL v0.0");
ps.setScene(new Scene(scene(), 800, 600));
ps.show();
}
public void say(String things){
Stage stage = new Stage(StageStyle.UTILITY);
stage.initOwner(ps);
Text text = new Text(things);
Button btn = new Button("Okay");
btn.setOnAction(e -> {stage.close();});
VBox pane = new VBox(text,btn);
pane.setAlignment(Pos.TOP_CENTER);
text.setLayoutY(12);
pane.autosize();
stage.setScene(new Scene(pane));
stage.sizeToScene();
stage.setOnShown(e -> {stage.requestFocus();});
stage.showAndWait();
}
public Pane scene(){
Pane pn = new Pane();
Button btn = new Button("Say Something");
btn.setOnAction(e->{FormBuilder.this.say("Something");});
btn.setLayoutX(0);
btn.setLayoutY(10);
pn.getChildren().add(btn);
pn.sceneProperty().addListener(new ChangeListener<Scene>(){
#Override
public void changed(ObservableValue<? extends Scene> arg0, Scene arg1, Scene arg2) {
System.out.println("new Scene");
if(arg2 != null)
arg2.windowProperty().addListener(new ChangeListener<Window>(){
#Override
public void changed(ObservableValue<? extends Window> observable, Window oldValue,
Window newValue) {
System.out.println("new window");
if(newValue != null){
Rectangle rect = new Rectangle(0,30,300,300);
rect.setFill(Color.RED);
pn.getChildren().add(rect);
Rectangle box = new Rectangle(30,60,50,50);
TranslateTransition tt = new TranslateTransition(Duration.seconds(1), box);
tt.setByX(160);
tt.setByY(160);
tt.setAutoReverse(true);
tt.setCycleCount(Animation.INDEFINITE);
pn.getChildren().add(box);
tt.play();
}
}
});
}
});
return pn;
}
}
package solo;
public class Main {
public static void main(String args[]){
FormBuilder fb = new FormBuilder();
fb.begin(args);
}
}