Bug: application cannot exit after Popover is shown

[bitfist]

Hi,

I am currently encountering a bug where the application keeps running after the window is closed. The bug only occurs after a Popover is shown. I am on Fedora 39 with KDE and Wayland.

Minimal example

public class PopoverBug extends Application {

    public static void main(String[] args) {
        System.setProperty("java.awt.headless", "false");
        Application.launch(args);
    }

    @Override
    public void start(Stage primaryStage) {
        var button = new Button("Button with Popover");
        button.setOnAction(event -> {
            var popover = new Popover(new BorderPane());
            popover.show(button);
        });

        var root = new BorderPane();
        root.setTop(button);

        var scene = new Scene(root, 1280.0, 800.0);

        primaryStage.setScene(scene);
        primaryStage.show();
    }
}

Additional info: using the PopOver from controls-fx does not trigger the bug.

PS: thank you for AtlantaFX, pretty awesome project =)

[zapek]

Easy to reproduce on Windows.

• run the AtlantaFX Sampler app
• go to Containers/Popover
• click on the "Text" preview
• close the app

Check in the task manager. It's in the Background processes and you have to kill it.