A DESCRIPTION OF THE PROBLEM :
When registering an onKeyPress() event handler on a TextField, we are unable to consume the event. Specifically, when consuming the [ENTER] key, the default button of the scene is triggered and the event is not consumed by the TextField.

REGRESSION : Last worked in version 8u162

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Enter text into the TextField and press the [ENTER] key.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
The TextField's onKeyPressed() method should be called, printing "-> Enter" to the console and the KeyEvent should be consumed.
ACTUAL -
The onAction() method for the scene's default button, btnSave, is called first, printing "-> Save" to the console before triggering the onKeyPressed() method for the TextField.

---------- BEGIN SOURCE ----------
import javafx.application.Application;
import javafx.geometry.Insets;
import javafx.geometry.Pos;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.ButtonBar;
import javafx.scene.control.TextField;
import javafx.scene.input.KeyCode;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;

public class Main extends Application {

    public static void main(String[] args) {
        launch(args);
    }

    @Override
    public void start(Stage primaryStage) {

        // Simple UI
        VBox root = new VBox(10);
        root.setPadding(new Insets(10));
        root.setAlignment(Pos.CENTER);

        // TextField
        TextField textField = new TextField();

        // Capture the KeyCode.ENTER key
        textField.setOnKeyPressed(event -> {
            if (event.getCode() == KeyCode.ENTER) {
                System.out.println("-> Enter");
                event.consume();
            }
        });

        // Buttons
        Button btnCancel = new Button("Cancel");
        btnCancel.setCancelButton(true);
        btnCancel.setOnAction(e -> {
            System.out.println("-> Cancel");
            primaryStage.close();
        });

        Button btnSave = new Button("Save");
        btnSave.setDefaultButton(true);
        btnSave.setOnAction(e -> {
            System.out.println("-> Save");
            primaryStage.close();
        });

        ButtonBar buttonBar = new ButtonBar();
        buttonBar.getButtons().addAll(btnCancel, btnSave);

        root.getChildren().addAll(textField, buttonBar);

        primaryStage.setScene(new Scene(root));
        primaryStage.setTitle("Consume Test");
        primaryStage.show();
    }
}
---------- END SOURCE ----------

CUSTOMER SUBMITTED WORKAROUND :
Currently adding a catch to the default button to determine if the TextField has focus:

btnSave.setOnAction(e -> {
            if (textField.isFocused()) return;
            System.out.println("-> Save");
            primaryStage.close();
});

FREQUENCY : always