Stops working on all controllers except initial view controller

[Hsanka6]

I have this code on my initial view controller and then on my second view controller but it only works on the first view controller. let halo = PulsingHaloLayer() halo.position = view.center view.layer.addSublayer(halo) halo.backgroundColor = UIColor.blue.cgColor halo.animationDuration = 3 halo.repeatCount = 3 halo.start()

[mkdk]

actually, it works only with initial view :(