Fix TabbedPage title displaying incorrectly

src/Controls/src/Core/NavigationPage/NavigationPageToolbar.cs

@@ -158,9 +158,9 @@ void UpdateBackButton()
 
 			// Once we have better logic inside core to handle backbutton visiblity this
 			// code should all go away.
-			// Windows currently doesn't have logic in core to handle back button visibility		
+			// Windows currently doesn't have logic in core to handle back button visibility
 			// Android just handles it as part of core which means you get cool animations
-			// that we don't want to interrupt here.	
+			// that we don't want to interrupt here.
 			// Once it's all built into core we can remove this code and simplify visibility logic
 			if (_currentPage.IsSet(NavigationPage.HasBackButtonProperty))
 			{
@@ -273,7 +273,16 @@ void OnPropertyChanged(object sender, System.ComponentModel.PropertyChangedEvent
 
 		Color GetBarTextColor() => _currentNavigationPage?.BarTextColor;
 		Color GetIconColor() => (_currentPage != null) ? NavigationPage.GetIconColor(_currentPage) : null;
-		string GetTitle() => GetTitleView() != null ? String.Empty : _currentPage?.Title;
+
+		string GetTitle()
+		{
+			if (GetTitleView() != null)
+			{
+				return string.Empty;
+			}
+
+			return _currentNavigationPage?.CurrentPage?.Title;
+		}
 
 		VisualElement GetTitleView()
 		{

src/Controls/tests/Core.UnitTests/ToolbarTests.cs

@@ -56,6 +56,22 @@ public async Task TitleAndTitleViewAreMutuallyExclusive()
 			Assert.Equal("Test Title", toolbar.Title);
 		}
 
+		[Fact]
+		public void ToolbarTitle_UsesTabbedPageTitleWhenSet()
+		{
+			var window = new TestWindow();
+			IToolbarElement toolbarElement = window;
+			var tabbedPage = new TabbedPage
+			{
+				Title = "Test Title",
+				Children = { new ContentPage { Title = "Child Test Title" } },
+			};
+			window.Page = new NavigationPage(tabbedPage);
+
+			var toolbar = (Toolbar)toolbarElement.Toolbar;
+			Assert.Equal(tabbedPage.Title, toolbar.Title);
+		}
+
 		[Fact]
 		public async Task InsertPageBeforeRootPageShowsBackButton()
 		{

src/Controls/tests/DeviceTests/Elements/Toolbar/ToolbarTests.cs

@@ -19,6 +19,7 @@
 #if IOS || MACCATALYST
 using FlyoutViewHandler = Microsoft.Maui.Controls.Handlers.Compatibility.PhoneFlyoutPageRenderer;
 using NavigationViewHandler = Microsoft.Maui.Controls.Handlers.Compatibility.NavigationRenderer;
+using TabbedRenderer = Microsoft.Maui.Controls.Handlers.Compatibility.TabbedRenderer;
 #endif
 
 namespace Microsoft.Maui.DeviceTests
@@ -38,7 +39,11 @@ void SetupBuilder()
 					handlers.AddHandler(typeof(Controls.NavigationPage), typeof(NavigationViewHandler));
 					handlers.AddHandler<Page, PageHandler>();
 					handlers.AddHandler<Controls.Window, WindowHandlerStub>();
-					handlers.AddHandler(typeof(TabbedPage), typeof(TabbedViewHandler));
+					#if IOS || MACCATALYST
+                    handlers.AddHandler(typeof(TabbedPage), typeof(TabbedRenderer));
+#else
+                    handlers.AddHandler(typeof(TabbedPage), typeof(TabbedViewHandler));
+#endif
 
 					SetupShellHandlers(handlers);
 				});