It seems that PDFPageOverlayViewProvider is set in the UIViewRepresentable of PDFView derived from class Coordiantor: NSObject. I wander why Apple doesn’t provide the demo App presented in the video. Maybe, the protocol is not working yet in the beta version.
Nuix
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Nope. I wander if it is possible to roll back to iOS / iPadOS beta 5, but I do not know where to download beta 5 ipsw.
/Applications/Xcode-beta.app/Contents/Developer/usr/bin/cktool
CoreData: CloudKit: CoreData+CloudKit: -[NSCloudKitMirroringDelegate _scheduleAutomatedImportWithLabel:activity:completionHandler:]_block_invoke(2775): <NSCloudKitMirroringDelegate: 0x28326c0c0> - Finished automatic import - SandboxImport - with result: <NSCloudKitMirroringResult: 0x280722dc0> success: 0 madeChanges: 0 error: Error Domain=NSCocoaErrorDomain Code=134410 "(null)" UserInfo={NSUnderlyingError=0x280987db0 {Error Domain=CKErrorDomain Code=36 "CKInternalErrorDomain: 1028" UserInfo={NSUnderlyingError=0x2809a7900 {Error Domain=CKInternalErrorDomain Code=1028 "Account temporarily unavailable due to bad or missing auth token" UserInfo={CKErrorDescription=Account temporarily unavailable due to bad or missing auth token, NSLocalizedDescription=Account temporarily unavailable due to bad or missing auth token, NSUnderlyingError=0x2809a69d0 {Error Domain=CKInternalErrorDomain Code=2011 "Couldn't get an authentication token" UserInfo=0x2812a2200 (not displayed)}}}, CKErrorDescription=Account temporarily unavailable due to bad or missing auth token, NSDebugDescription=CKInternalErrorDomain: 1028, NSLocalizedDescription=Account temporarily unavailable due to bad or missing auth token}}}
CKErrorDescription=Account temporarily unavailable due to bad or missing auth token
@main
struct mindoApp: App {
		@UIApplicationDelegateAdaptor private var appDelegate: AppDelegate
		var body: some Scene {
						 WindowGroup {
											 ContentView()
						 }
		 }
}
class AppDelegate: NSObject, UIApplicationDelegate {
		func application(_ application: UIApplication, configurationForConnecting connectingSceneSession: UISceneSession, options: UIScene.ConnectionOptions) -> UISceneConfiguration {
				if options.userActivities.first?.activityType == "newWindow" {
					 let configuration = UISceneConfiguration(name: "Default Configuration", sessionRole: connectingSceneSession.role)
					 configuration.delegateClass = SceneDelegate.self
					 return configuration
				} else {
					 return UISceneConfiguration(name: "Default Configuration", sessionRole: connectingSceneSession.role)
			 }
}
class SceneDelegate: UIResponder, UIWindowSceneDelegate {
		var window: UIWindow?
		func scene(_ scene: UIScene, willConnectTo session: UISceneSession, options connectionOptions: UIScene.ConnectionOptions) {
				if let windowScene = scene as? UIWindowScene {
						let window = UIWindow(windowScene: windowScene)
						window.rootViewController = UIHostingController(rootView: TestView())
						self.window = window
						window.makeKeyAndVisible()
				}
		}
}
The following code is used to create a new scene/window
				UIApplication.shared.requestSceneSessionActivation(nil, userActivity: NSUserActivity(activityType: “newWindow"), options: nil, errorHandler: nil)
The TestView can be put into the second scene/window on iPadOS/macOS. But, the App crashes when closing the second scene/window:
Fatal error: Attempted to read an unowned reference but object 0x60000061d1c0 was already deallocated