SpriteKit TileMapNode MemoryLeak Bug

Hello community,

after days and days of researching and trying out my best, i do not find a solution on my memory leak problem.

I load my GameScene.sks with this code like everyone else does:

extension SKNode {

1. class func unarchiveFromFile(file:String) -> SKNode? {

2.   if let path = Bundle.main.path(forResource: file, ofType: "sks") {

3.      let url = URL(fileURLWithPath: path)

4.           do {

5.              let sceneData = try Data(contentsOf: url, options: .mappedIfSafe)

6.              let archiver = NSKeyedUnarchiver(forReadingWith: sceneData)

7. archiver.setClass(self.classForKeyedUnarchiver(), forClassName: "SKScene")

8.              let scene = archiver.decodeObject(forKey: NSKeyedArchiveRootObjectKey)

9.                   as! SKNode                        

10.              archiver.finishDecoding()                   

11.              return scene

12.              }

13.           catch { print(error.localizedDescription) return nil }

14.     } else {

15.        return nil

16.     }

17. }

and i am using it in my code here:

1. func load(level: String) {

2.      if let levelNode = SKNode.unarchiveFromFile(file: level) {

3.      mapNode = levelNode

4.      self.worldLayer.addChild(mapNode)

5.      loadTileMap()

6.      }

7. }

If i comment out the line

self.worldLayer.addChild(mapNode)

With use of Instruments it says that the line with

let scene = archiver.decodeObject(forKey: NSKeyedArchiveRootObjectKey) as! SKNode

Unfortunately i do not get it managed to remove my leaks.

I appreciate all help.