image not visible untill resize

[jan dressen]

hello all,

I have a problem with dynamically adding images to a flowlayout(or maybe to a scene in general). I have the following piece of code(see below) to dynamically add images to a flowlayout. this works sometimes, but sometimes the image doesn't show up until i resize my application window. does anyone know what causes this effect and how to solve it?

var insImage: javafx.scene.image.Image = javafx.scene.image.Image {
                        url: "file:{(image as Img).getSrc()}";
                        preserveRatio: true
                    };

            var vw: ImageView = ImageView {
                        id: image.toString()
                        fitWidth: bind if (toolBackgroundZone.visible) then (scene.width / 5 * 2.9) / (images.size() * 1.1) else (scene.width / 5 * 4.9) / (images.size() * 1.1)
                        fitHeight: bind scene.height - 335
                        preserveRatio: true
                        image: insImage;
                    };
            println("image url {vw.image.url}");
            insert vw into flow.content;