package bugsverifying;

import javafx.application.Application;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.scene.control.TextField;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;

/**
 *
 * @author alexandr_kirov
 */
public class Main extends Application{
   
    public static void main(String[] args) {
        launch(Main.class, args);
    }

    private Parent getContent() {

        VBox list=new VBox();
        TextField box= new TextField("Helloooo world!!!aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaab");
        //box.setPrefColumnCount(5);
        box.setMaxWidth(50);
        box.setPrefWidth(50);
        box.setMinWidth(50);
        list.getChildren().addAll(box);
        return list;
    }

    public void start(Stage stage) {
        stage.setX(100);
        stage.setY(100);
        Scene scene = new Scene(getContent());
        stage.setScene(scene);
        stage.show();
    }
}

It is impossible to select text "aaaaa.......aaaaa" when text is scrolled to the right end BY MOUSE. But it can be selected using shift+left/right keys combinations.