[macos] Accessibility Inspector does not work with JavaFX apps

ADDITIONAL SYSTEM INFORMATION :
Java 14, macOS Catalina

A DESCRIPTION OF THE PROBLEM :
Application window is completely invisible for Accessibility Inspector

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
1. Create and show a stage
2. Point Accessibility Inspector (an XCode tool) at the window to verify it's accessible

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
Window is reachable by Accessibility Inspector, accessible nodes provide acessibility information
ACTUAL -
Window is completely invisible for Accessibility Inspector

---------- BEGIN SOURCE ----------
import javafx.application.Application;
import javafx.scene.AccessibleRole;
import javafx.scene.Scene;
import javafx.scene.control.Label;
import javafx.scene.layout.Pane;
import javafx.stage.Stage;

public class AccessibilityRepro extends Application {

    public void start(Stage stage) throws Exception {
        Label label = new Label("Hello world");
        label.setAccessibleRole(AccessibleRole.TEXT);
        label.setAccessibleHelp("Accessible help");
        label.setAccessibleRoleDescription("Accessible role description");
        label.setAccessibleText("Accessible text");
        stage.setScene(new Scene(new Pane(label)));
        stage.show();
    }

    public static void main(String[] args) {
        Application.launch(AccessibilityRepro.class, args);
    }
}

---------- END SOURCE ----------

FREQUENCY : always