import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.control.Tab;
import javafx.scene.control.TabPane;
import javafx.scene.layout.StackPane;
import javafx.stage.Stage;

public class Test extends Application {

    @Override
    public void start(Stage primaryStage) {
        TabPane tabPane = new TabPane();
        tabPane.setTabDragPolicy(TabPane.TabDragPolicy.REORDER);

        tabPane.getTabs().add(new Tab("First"));
        tabPane.getTabs().add(new Tab("Second"));
        tabPane.getTabs().add(new Tab("Third"));
        tabPane.getTabs().add(new Tab("Fourth"));
        tabPane.getTabs().add(new Tab("Fifth"));

        StackPane root = new StackPane();
        root.getChildren().add(tabPane);

        Scene scene = new Scene(root, 300, 250);

        primaryStage.setTitle("TabPane bug");
        primaryStage.setScene(scene);
        primaryStage.show();
    }
    public static void main(String[] args) {
        launch(args);
    }
}