package bug; import javafx.application.Application; import javafx.scene.Scene; import javafx.scene.control.SplitMenuButton; import javafx.scene.layout.Pane; import javafx.stage.Stage; public class Bug extends Application { @Override public void start(Stage stage) throws Exception { SplitMenuButton smb = new SplitMenuButton(); smb.setPrefSize(100, 40); Pane root = new Pane(); root.getChildren().add(smb); Scene scene = new Scene(root,150,50); stage.setScene(scene); stage.show(); } }