Bitmap drawing problem

programming flash
1

Hello!
The title might be misleading since i have no idea what’s happening!
I have 2x MovieClips which are filled with their own textures
whenever I press a button but when i add the textures,
it looks like this:

But!
When i change the size of the Flash Player-window,
like maximizing or changing the size in any way,
it now looks like this (As it should look like!)

function drawMc(w:int, h:int, mc:MovieClip):void{
	var mySprite:Sprite = new Sprite();
	var myBitmap:BitmapData = new BitmapData(loader.width, loader.height);
	myBitmap.draw(loader);
                    
	mySprite.graphics.clear();
	mySprite.graphics.beginBitmapFill(myBitmap);
	mySprite.graphics.drawRect(0,0,w,h);
	mySprite.graphics.endFill();
	mc.addChild(mySprite);
}

Really grateful for help!
~Tompa