This is only applicable for unsolvable bug in iOS 15.0 to 15.5. However, in iOS 16.0 and onwards its working fine.
let image = UIImage.init(named: "bug")?.withRenderingMode(.alwaysOriginal)
self.tabBarItem = UITabBarItem(title: "I am Bug", image: image, selectedImage: image)
If you see moreNavigationController then instead of showing image with "I am Bug" title it's showing dark gray color. I am unable to identify why this dark gray color is showing on moreNavigationController.