It doesn't reproduce for me on windows with JavaFX 11.0.2.
Whether this is a bug and/or a regression I cannot say.
-----Original Message-----
From: Dirk Lemmermann <dlemmerm...@gmail.com>
Sent: Thursday, April 23, 2020 10:20 AM
To: David Grieve <david.gri...@microsoft.com>
Cc: OpenJFX <openjfx-dev@openjdk.java.net>
Subject: [EXTERNAL] Re: White box / window flicker upon launch
I tried as you suggested. Problem is still there.
> On 23 Apr 2020, at 16:00, David Grieve <david.gri...@microsoft.com> wrote:
>
> Another possible workaround is to call Node#applyCss() before stage.show().
> There is an example in the Javadoc for the applyCss() method.
>
> -----Original Message-----
> From: openjfx-dev <openjfx-dev-boun...@openjdk.java.net> On Behalf Of
> Dirk Lemmermann
> Sent: Wednesday, April 22, 2020 1:46 PM
> To: OpenJFX <openjfx-dev@openjdk.java.net>
> Subject: [EXTERNAL] White box / window flicker upon launch
>
> Hi everyone,
>
> is it just me or did something change in the launch behaviour of JavaFX
> applications? It seems we are back to the old “grey box” bug of Swing where
> the window would appear first before filling its content. I noticed the same
> (but white) effect now for my JavaFX apps, especially when running on mobile
> devices via Gluon. Once I saw it there I paid attention to it and also
> noticed it when running my desktop apps (on MacOS). I must admit that I am
> also not certain if it has been different before. Maybe I simply notice it
> now?
>
> To verify run this little program. You have to pay close attention but if I
> am not mistaken then the window first shows up with a white background before
> showing its content, which is orange.
>
> Can somebody confirm? If so, I will create a bug ticket.
>
> Regards,
>
> Dirk
>
>
> import javafx.application.Application; import javafx.scene.Scene;
> import javafx.scene.layout.VBox; import javafx.stage.Stage;
>
> public class BugDemo extends Application {
>
> public void start(Stage stage) {
> VBox root = new VBox();
> root.setStyle("-fx-background-color: orange;");
> Scene scene = new Scene(root, 1000, 800);
> stage.setScene(scene);
> stage.show();
> }
>
> public static void main(String[] args) {
> launch(args);
> }
> }
