swift – iOS App Exhibits Black Display After Switching from SwiftUI App to UIKit AppDelegate/SceneDelegate

I am creating an iOS app and lately switched from utilizing SwiftUI’s App protocol to the standard UIKit AppDelegate and SceneDelegate strategy. After making this alteration, my app launches however solely exhibits a black display.

What I’ve executed:

• I’ve arrange my AppDelegate and SceneDelegate information
• I am utilizing a customized RouterManager to deal with navigation (singleton sample)
• I’ve correctly configured my Data.plist with UIApplicationSceneManifest
• The RouterManager’s begin() methodology is known as in SceneDelegate

My Data.plist configuration:

UIApplicationSceneManifest

    UIApplicationSupportsMultipleScenes
    
    UISceneConfigurations
    
        UIWindowSceneSessionRoleApplication
        
            
                UISceneConfigurationName
                Default Configuration
                UISceneDelegateClassName
                $(PRODUCT_MODULE_NAME).SceneDelegate
            
        
    

My RouterManager implementation (simplified):

last class RouterManager: RouterProtocol {
    static let shared: any RouterProtocol = RouterManager()
    
    let navigationController: UINavigationController = .init()
    
    non-public init() {}
    
    func begin() {
        present(.splash, animated: true)
    }
    
    func present(_ route: Route, animated: Bool) {
        DispatchQueue.predominant.async {
            let routeView = route.view()
            let view = routeView.environmentObject(self)
            let viewController = UIHostingController(rootView: view)
            
            viewController.navigationItem.hidesBackButton = true
            
            change route.rotingType {
            case .push:
                self.navigationController.pushViewController(viewController, animated: animated)
            // Different instances...
            }
        }
    }
    // Different strategies...
}

My SceneDelegate setup:

last class SceneDelegate: NSObject, UIWindowSceneDelegate {
    var window: UIWindow?
    
    func scene(_ scene: UIScene, willConnectTo session: UISceneSession, choices connectionOptions: UIScene.ConnectionOptions) {
        guard let windowScene = scene as? UIWindowScene else { return }
        window = UIWindow(windowScene: windowScene)
        window?.rootViewController = RouterManager.shared.navigationController
        window?.makeKeyAndVisible()
        
        RouterManager.shared.begin()
    }
}

My AppDelegate setup:

@predominant
class AppDelegate: NSObject, UIApplicationDelegate, UNUserNotificationCenterDelegate {
    func utility(_ utility: UIApplication, configurationForConnecting connectingSceneSession: UISceneSession, choices: UIScene.ConnectionOptions) -> UISceneConfiguration {
        
        let sessionRole = connectingSceneSession.position
        let sceneConfiguration = UISceneConfiguration(title: "Default Configuration", sessionRole: sessionRole)
        sceneConfiguration.delegateClass = SceneDelegate.self
        return sceneConfiguration
    }
}

The app compiles with out errors, however once I run it, I solely see a black display. No errors within the console. I’ve verified that the RouterManager’s begin() methodology is being referred to as, and it needs to be displaying the splash display.
What could possibly be inflicting this black display situation? Is there one thing I am lacking within the setup when transitioning from SwiftUI’s App protocol to UIKit’s AppDelegate/SceneDelegate strategy?

Technical particulars:

• iOS goal — iOS 15.0
• Xcode model — 16.2

Any assist can be enormously appreciated!