Sometimes on Mac, BorderPane will not consume the event, thus it will be passed to an inclosed control, a button for example. To reproduce:

import javafx.application.Application;
import javafx.event.EventHandler;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.input.KeyEvent;
import javafx.scene.layout.BorderPane;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;

public class App extends Application
{
    @Override
    public void start(Stage stage) throws Exception
    {
        Button b = new Button("Button");
        b.setOnKeyPressed(new EventHandler<KeyEvent>(){
            @Override
            public void handle(KeyEvent event) {
                if (event.isShortcutDown()) {
                    System.out.println(event.getCode() + ", " + event.getCharacter() + " pressed in Button, shortcut: " + event.isShortcutDown());
                    event.consume();
                }
            }
        });

        final BorderPane p = new BorderPane();
        p.addEventFilter(KeyEvent.KEY_PRESSED, new EventHandler<KeyEvent>() {
            @Override
            public void handle(KeyEvent event)
            {
                if (event.isShortcutDown()) {
                    System.out.println(event.getCode() + ", " + event.getCharacter() + " pressed in BorderPane, shortcut: " + event.isShortcutDown());
                    event.consume();
                }
            }
        });
        p.setCenter(b);

        Scene s = new Scene(new VBox());
        ((VBox)s.getRoot()).getChildren().add(p);
        stage.setScene(s);
        stage.show();
    }
}

The output will be from the both controllers.

P.S. I have tried to change the 'setOnKeyPressed' to 'setOnKeyTyped' and/or change 'keyEvent.KEY_PRESSED' to 'keyEvent.KEY_TYPED', but has the same results.