Is it possible to delete little white line between button and nav bar

[gedzionsas]

Is it possible to delete little white spot as it is shown in the picture? I tried a lo of different ways to change tint color, button color and another, but nothing helped me, could you help me with that?

[Antlers777]

Is it possible to delete little white spot as it is shown in the picture? I tried a lo of different ways to change tint color, button color and another, but nothing helped me, could you help me with that?

Maybe you can do this by adding a property to your navigation bar:
self.navigationController?.navigationBar.shadowImage = UIImage()