Don't run hide on tapped code if window is null

src/Controls/src/Core/ContentPage/HideSoftInputOnTappedChanged/HideSoftInputOnTappedChangedManager.Platform.cs

@@ -79,6 +79,14 @@ void OnPageNavigatedFrom(object? sender, NavigatedFromEventArgs e)
 				return null;
 			}
 
+			if (ve.Window is null)
+			{
+				// This means the xplat IsFocused value has lagged behind navigation events.
+				// This might happen if navigated has fired on the incoming page but the
+				// "LostFocus" event hasn't propagated from the previous one
+				return null;
+			}
+
 			IDisposable? platformToken = SetupHideSoftInputOnTapped(platformView);
 
 #if ANDROID

src/Controls/tests/DeviceTests/ControlsHandlerTestBase.cs

@@ -30,6 +30,7 @@ public partial class ControlsHandlerTestBase : HandlerTestBase, IDisposable
 		protected override MauiAppBuilder ConfigureBuilder(MauiAppBuilder mauiAppBuilder)
 		{
 			mauiAppBuilder.Services.AddSingleton<IApplication>((_) => new ApplicationStub());
+			mauiAppBuilder.Services.AddScoped(_ => new HideSoftInputOnTappedChangedManager());
 			return mauiAppBuilder.ConfigureTestBuilder();
 		}
 

src/Controls/tests/DeviceTests/Elements/Shell/ShellTests.cs

@@ -40,6 +40,7 @@ void SetupBuilder()
 					SetupShellHandlers(handlers);
 					handlers.AddHandler(typeof(NavigationPage), typeof(NavigationViewHandler));
 					handlers.AddHandler(typeof(Button), typeof(ButtonHandler));
+					handlers.AddHandler(typeof(Entry), typeof(EntryHandler));
 					handlers.AddHandler(typeof(Controls.ContentView), typeof(ContentViewHandler));
 					handlers.AddHandler(typeof(ScrollView), typeof(ScrollViewHandler));
 					handlers.AddHandler(typeof(CollectionView), typeof(CollectionViewHandler));
@@ -1001,6 +1002,49 @@ public async Task PagesDoNotLeak()
 			Assert.False(pageReference.IsAlive, "Page should not be alive!");
 		}
 
+		[Fact(DisplayName = "HideSoftInputOnTapped Doesnt Crash If Entry Is Still Focused After Window Is Null")]
+		public async Task HideSoftInputOnTappedDoesntCrashIfEntryIsStillFocusedAfterWindowIsNull()
+		{
+			SetupBuilder();
+
+			Entry entry1;
+			Entry entry2;
+
+			var rootPage = CreatePage(out entry1);
+			var nextPage = CreatePage(out entry2);
+
+			var shell = await CreateShellAsync(shell =>
+			{
+				shell.CurrentItem = rootPage;
+			});
+
+			await CreateHandlerAndAddToWindow<IWindowHandler>(shell, async (handler) =>
+			{
+				entry1.Focus();
+				await entry1.WaitForFocused();
+
+				await rootPage.Navigation.PushAsync(nextPage);
+				entry2.Focus();
+				await entry2.WaitForFocused();
+
+				await shell.GoToAsync("..", false);
+			});
+
+			ContentPage CreatePage(out Entry entry)
+			{
+				entry = new Entry();
+
+				return new ContentPage()
+				{
+					HideSoftInputOnTapped = true,
+					Content = new VerticalStackLayout()
+					{
+						entry
+					}
+				};
+			}
+		}
+
 		[Fact(DisplayName = "Can Reuse Pages")]
 		public async Task CanReusePages()
 		{