I have 5 tabs, each with a TextArea inside. I open the app, I select the TextArea on the first Tab, and I write, everything's fine. When I switch to the second tab I don't seem to be able to focus on the TextArea (mouse cursor is an arrow and if I click it doesn't do anything), unless I go to the top left corner of the TextArea. It's like there's this small square, inside which I can focus the TextArea. But on the rest of the TextArea's space, I can't focus it, hence I can't write. Please let me know if you need more detail or a screenshot or whatever.

public class TabbedApp extends Application {
    Group root = new Group();
    TabPane tabPane = new TabPane();
            
    public void init() {
        // Prepare tab pane with set of tabs
        BorderPane borderPane = new BorderPane();
        tabPane.setPrefSize(400, 400);
        tabPane.setSide(Side.TOP);
        tabPane.setTabClosingPolicy(TabPane.TabClosingPolicy.UNAVAILABLE);
        
        for(int i=1; i<=5; i++) {
            final Tab t = new Tab("T" + i);
            t.setId(""+i);
            TextArea ta = new TextArea();
            t.setContent(ta);
            tabPane.getTabs().add(t);
        }
        borderPane.setCenter(tabPane);
        root.getChildren().add(borderPane);
    }
 
    @Override
    public void start(Stage primaryStage) throws Exception {
        primaryStage.setScene(new Scene(root));
        primaryStage.show();
    }
    
     public static void main(String[] args) {
        launch(args);
    }
}