Hello everyone. I have an application in which you can open an AR view by tapping on a button. However, after popping the view from my navigation controller and tapping on the AR button again something unusual happens in the camera feed. I see a sudden appearance of the last frame of my previous ar session. Any ideas?   override func viewDidLoad() {     super.viewDidLoad()     focusSquare = FocusEntity(on: arview, style: .classic(color: .yellow))     setupCoachingOverlay()   }       override func viewWillAppear(_ animated: Bool) {     self.navigationController?.isNavigationBarHidden = true   }       override func viewDidAppear(_ animated: Bool) {     super.viewDidAppear(animated)     UIApplication.shared.isIdleTimerDisabled = true     resetTracking() }   override func viewWillDisappear(_ animated: Bool) {     super.viewWillDisappear(animated)     arview.session.pause()   }       deinit{     arview.session.delegate = nil     arview.scene.anchors.removeAll()     arview.removeFromSuperview()     arview = nil   } func resetTracking() {     arview.automaticallyConfigureSession = false     let configuration = ARWorldTrackingConfiguration()     configuration.planeDetection = [.horizontal, .vertical]     arview.session.run(configuration, options: [.resetTracking, .removeExistingAnchors])     arview.scene.addAnchor(anchor)   }