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I've been working with ARKit recently while doing some memory leak profiling and noticed that when resetting (calling .run again) the ARSession using the .resetTracking option, there is a memory leak that the Leaks tool reports as coming from somewhere to do with vImageMapping_CreateFromMap_Image8U. I'm not sure if it is something that I'm doing incorrectly or if it an issue on ARKit's side. Here is a simple code snippet of the SceneKit ViewController setup (modified from an Apple sample):      override func viewDidLoad() {         super.viewDidLoad()         let button:UIButton = UIButton(frame: CGRect(x: 100, y: 400, width: 100, height: 50))         button.backgroundColor = UIColor.black         button.setTitle("Reset", for: .normal)         button.addTarget(self, action:#selector(self.buttonClicked), for: .touchUpInside)         self.view.addSubview(button)         sceneView.delegate = self         sceneView.session.delegate = self     }     @objc func buttonClicked() {         resetTracking()     }     override func viewDidAppear(_ animated: Bool) {         super.viewDidAppear(animated)         resetTracking()     }     override func viewWillDisappear(_ animated: Bool) {         super.viewWillDisappear(animated)         session.pause()     }     func resetTracking() {         let configuration = ARWorldTrackingConfiguration()         configuration.planeDetection = [.horizontal, .vertical]         if #available(iOS 12.0, *) {             configuration.environmentTexturing = .automatic         }         session.run(configuration, options: [.resetTracking])     } To recreate, Start the app (can snapshot a memory profile here to see there are no leaks), hit the "reset" button we've created, generate a memory profile In the profile, there is an indication that there is a 409600 byte-malloc block that has leaked for every reset.