Just Java

I run into a strange problem. I think I have missed something. So every hint is welcome!

Try this demo:
[cc lang="c"]import javafx.stage.Stage;
import javafx.scene.Scene;
import javafx.scene.layout.Panel;
import javafx.scene.shape.Rectangle;
import javafx.scene.paint.Color;
import javafx.scene.layout.Container;

public function run( ) {

//Remove the next two lines for a miracle!
Asdf {}}
public class Asdf {

def stage: Stage = Stage {
scene: Scene {
width: 800
height: 600
content: [
{
def p: Panel = Panel {
width: bind stage.scene.width
height: bind stage.scene.height
onLayout: function (): Void {
p.resizeContent();
for ( node in Container.getManaged( p.content ) ) {
Container.positionNode( node, indexof node * 20 + 50, indexof node * 30 + 40, true );
}
}
content: [
Rectangle {
width: 140, height: 90
fill: Color.ORANGE
opacity: 0.5
},
Rectangle {
width: 100, height: 120
fill: Color.BLUE
opacity: 0.5
}, ]
}
},
]
}
};
}
[/cc]

The layout of the panel doesn’t work properly…

Now lets move the stage directly into the run function (just remove two lines):

[cc lang="c"]
import javafx.stage.Stage;
import javafx.scene.Scene;
import javafx.scene.layout.Panel;
import javafx.scene.shape.Rectangle;
import javafx.scene.paint.Color;
import javafx.scene.layout.Container;

public function run( ) {

//Remove the next two lines for a miracle!
//Asdf {}}
//public class Asdf {

def stage: Stage = Stage {
scene: Scene {
width: 800
height: 600
content: [
{
def p: Panel = Panel {
width: bind stage.scene.width
height: bind stage.scene.height
onLayout: function (): Void {
p.resizeContent();
for ( node in Container.getManaged( p.content ) ) {
Container.positionNode( node, indexof node * 20 + 50, indexof node * 30 + 40, true );
}
}
content: [
Rectangle {
width: 140, height: 90
fill: Color.ORANGE
opacity: 0.5
},
Rectangle {
width: 100, height: 120
fill: Color.BLUE
opacity: 0.5
}, ]
}
},
]
}
};
}
[/cc]

Now everything works as expected! Any hints?