Still more fixes.

Other Projects/Interfacing With UIKit/Complete/Landmarks/Landmarks/CategoryRow.swift

@@ -18,10 +18,10 @@ struct CategoryRow: View {
                 .padding(.leading, 15)
                 .padding(.top, 5)
             
-            ScrollView(showsHorizontalIndicator: false) {
+            ScrollView([]) {
                 HStack(alignment: .top, spacing: 0) {
                     ForEach(self.items.identified(by: \.name)) { landmark in
-                        NavigationButton(
+                        NavigationLink(
                             destination: LandmarkDetail(
                                 landmark: landmark
                             )

Other Projects/Interfacing With UIKit/Complete/Landmarks/Landmarks/Home.swift

@@ -33,19 +33,18 @@ struct CategoryHome: View {
                 }
                 .listRowInsets(EdgeInsets())
                 
-                NavigationButton(destination: LandmarkList()) {
+                NavigationLink(destination: LandmarkList()) {
                     Text("See All")
                 }
             }
             .navigationBarTitle(Text("Featured"))
             .navigationBarItems(trailing:
-                PresentationButton(
+                PresentationLink(destination: ProfileHost()) {
                     Image(systemName: "person.crop.circle")
                         .imageScale(.large)
                         .accessibility(label: Text("User Profile"))
-                        .padding(),
-                    destination: ProfileHost()
-                )
+                        .padding()
+                }
             )
         }
     }

Other Projects/Interfacing With UIKit/Complete/Landmarks/Landmarks/LandmarkList.swift

@@ -20,7 +20,8 @@ struct LandmarkList: View {
                 ForEach(userData.landmarks) { landmark in
                     if !self.userData.showFavoritesOnly || landmark.isFavorite {
                         NavigationLink(
-                        destination: LandmarkDetail(landmark: landmark)) {
+                            destination: LandmarkDetail(landmark: landmark)
+                                .environmentObject(self.userData)) {
                             LandmarkRow(landmark: landmark)
                         }
                     }

Other Projects/Interfacing With UIKit/Complete/Landmarks/Landmarks/SceneDelegate.swift

@@ -18,10 +18,12 @@ class SceneDelegate: UIResponder, UIWindowSceneDelegate {
         // This delegate does not imply the connecting scene or session are new (see `application:configurationForConnectingSceneSession` instead).
 
         // Use a UIHostingController as window root view controller
-        let window = UIWindow(frame: UIScreen.main.bounds)
-        window.rootViewController = UIHostingController(rootView: CategoryHome().environmentObject(UserData()))
-        self.window = window
-        window.makeKeyAndVisible()
+        if let windowScene = scene as? UIWindowScene {
+            let window = UIWindow(windowScene: windowScene)
+            window.rootViewController = UIHostingController(rootView: CategoryHome().environmentObject(UserData()))
+            self.window = window
+            window.makeKeyAndVisible()
+        }
     }
 
     func sceneDidDisconnect(_ scene: UIScene) {