ADDITIONAL SYSTEM INFORMATION :
Windows 11 + Java 17 + Javafx 22
and Windows 11 + Java 24 + Javafx 24

A DESCRIPTION OF THE PROBLEM :
With an invisible cursor (Cursor.NONE) or an ImageCursor, the cursor returns to the default cursor (the arrow) for a brief moment when ALT+enter keys are pressed (hold down the keys for a more explicit visual effect).

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
1. Run the 'Test Case Code'
2. The mouse pointer must be inside the application window
3. Press ALT+ENTER


---------- BEGIN SOURCE ----------
import javafx.application.Application;
import javafx.scene.Cursor;
import javafx.scene.Scene;
import javafx.scene.layout.StackPane;
import javafx.stage.Stage;
 
public class Test extends Application {
 
public static void main(String[] args) {
Application.launch(args);
}
 
@Override
public void start(Stage primaryStage) throws Exception {
StackPane root = new StackPane();
root.setStyle("-fx-background-color:black");
Scene scene = new Scene(root, 800, 600);
 
root.setCursor(Cursor.NONE);
 
primaryStage.setScene(scene);
primaryStage.show();
}
 
}
---------- END SOURCE ----------