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Dive into Spritekit and SwiftUI does not fill whole screen

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I am trying to work on Project 1 and use SpriteKit and SwiftUI but for some reason the scene never fill the whole screen on my iPad.

//  ContentView.swift
//  HackingProject1
//  Created by Max on 2021-05-18.

import SwiftUI
import SpriteKit

struct ContentView: View {
    var scene: SKScene {
        let screenWidth  = UIScreen.main.bounds.width
        let screenHeight = UIScreen.main.bounds.height

        let scene = GameScene()
        scene.size = CGSize(width: screenHeight, height: screenWidth)
        scene.scaleMode = .fill
        scene.backgroundColor = .green
        return scene

    var body: some View {
        let screenWidth  = UIScreen.main.bounds.width
        let screenHeight = UIScreen.main.bounds.height


        return SpriteView(scene: scene)
            .frame(width: screenWidth, height: screenHeight)

struct ContentView_Previews: PreviewProvider {
    static var previews: some View {

Right now it looks like this:

Any ideas what I am missing here?



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