title: UITabBarAppearance does not work on iOS15 iPad (title color)
body: <p>I created a simple demo and only created a UITabBarController's subclass and set in storyboard.</p>
  <p>I want to set the TabBarButtonItem's title to an orange color when selected and black color when normal. The following code works fine on any iOS version on iPhone, but on iOS 15's iPad (both device and simulator) the selected color changes to blue and wired normal state color.</p>
  <p>Is this an Apple bug or have I missed something?(I'm using Xcode13)</p>
  <pre class="lang-swift prettyprint-override"><code>class CustomViewController: UITabBarController {
  
      override func viewDidLoad() {
          super.viewDidLoad()
  
          let tabBarAppearnace = UITabBarAppearance()
          let tabFont =  UIFont.boldSystemFont(ofSize: 18)
          
          let selectedAttributes: [NSAttributedString.Key: Any]
          = [NSAttributedString.Key.font: tabFont, NSAttributedString.Key.foregroundColor: UIColor.orange]
          let normalAttributes: [NSAttributedString.Key: Any]
          = [NSAttributedString.Key.font: tabFont, NSAttributedString.Key.foregroundColor: UIColor.black]
          
          tabBarAppearnace.stackedLayoutAppearance.normal.titleTextAttributes = normalAttributes
          tabBarAppearnace.stackedLayoutAppearance.selected.titleTextAttributes = selectedAttributes
          
          tabBar.standardAppearance = tabBarAppearnace
      }
  }
  </code></pre>
  <p><a href="https://i.stack.imgur.com/UrCJl.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/UrCJl.png" alt="enter image description here" /></a></p>