About JDK-8371781. I understood the problem. The window seems to be created but
it is not visible. I recorded a GIF that clearly shows the issue (it is about
15 seconds long, watch until the label text changes) - https://ibb.co/n8Y42bNy
I hope, it will help.
Test code:
public class Test1 extends Application {
private final Label label = new Label("Miracles don’t happen.");
@Override
public void start(Stage stage) {
MenuItem item = new MenuItem("Click me!");
item.setOnAction(e -> {
label.setText("It’s a miracle!");
});
Menu menu = new Menu("Menu");
menu.getItems().add(item);
MenuBar bar = new MenuBar(menu);
var stackPane = new StackPane(label);
VBox.setVgrow(stackPane, Priority.ALWAYS);
label.setStyle("-fx-font-size: 30");
VBox root = new VBox(bar, stackPane);
Scene scene = new Scene(root, 400, 400);
stage.setScene(scene);
stage.setTitle("JDK-8371781");
stage.show();
}
public static void main(String[] args) {
launch();
}
}
Best regards, Pavel
On 11/18/25 18:21, Kevin Rushforth wrote:
Regarding the second issue, JDK-8372108, I will add your additional information
as a comment and reopen the bug.
Regarding the first issue, I see the following, which I presume is the one you
filed?
JDK-8371781: Popup for ComboBox, Menu, and Tooltip is not shown sometimes in
JavaFX
I don't know why you didn't receive notification when it was processed and
transferred to the JDK project in JBS. I see that it was closed as not
reproducible. Do you have additional information that would help reproduce it?
-- Kevin
On 11/18/2025 8:06 AM, PavelTurk wrote:
Hello everyone,
On November 10, I opened an issue (using the new redesigned form), and the
system showed me the ID 23c3711c-36b1-4b94-a0d3-25bbdcf1b95f. The issue was
about the fact that PopupWindow is not always shown on Linux systems, and I
described how to reproduce the bug using a Tooltip. However, I still haven’t
received any information about my issue.
On November 16, I opened another issue (using the old form) about a memory leak
in Tab that is related to GRAPHIC. Today I received a message that the issue is
JDK-8372108. However, my issue was immediately closed with a note saying that
it is a duplicate of JDK-8283449. But it is NOT a duplicate. JDK-8283449 is
related to a problem in ContextMenu. I know this issue and I use the following
workaround:
contextMenu.getProperties().put(KEY, new WeakReference<Tab>(tab));
MenuItem close = new MenuItem(..);
close.setOnAction((e) -> {
var t = getTab(contextMenu); // from properties
});
The issue I reported is related to |graphic|. So I believe that there are TWO
separate problems with tabs that lead to memory leaks.
Best regards, Pavel
