[iOS/Mac Catalyst 26] Fix Shell.ForegroundColor not applied to ToolbarItems

src/Controls/src/Core/Compatibility/Handlers/Shell/iOS/ShellPageRendererTracker.cs

@@ -107,7 +107,10 @@ protected virtual void HandleShellPropertyChanged(object sender, PropertyChanged
 			if (e.Is(VisualElement.FlowDirectionProperty))
 				UpdateFlowDirection();
 			else if (e.Is(Shell.FlyoutIconProperty) || e.Is(Shell.ForegroundColorProperty))
+			{
 				UpdateLeftToolbarItems();
+				UpdateRightBarButtonItemTintColors();
+			}
 		}
 
 #nullable disable
@@ -154,6 +157,7 @@ protected virtual void OnPagePropertyChanged(object sender, PropertyChangedEvent
 			else if (e.PropertyName == Shell.ForegroundColorProperty.PropertyName)
 			{
 				UpdateLeftToolbarItems();
+				UpdateRightBarButtonItemTintColors();
 			}
 		}
 
@@ -455,9 +459,37 @@ protected virtual void UpdateToolbarItems()
 
 			NavigationItem.SetRightBarButtonItems(primaries is null ? Array.Empty<UIBarButtonItem>() : primaries.ToArray(), false);
 
+			UpdateRightBarButtonItemTintColors();
 			UpdateLeftToolbarItems();
 		}
 
+		/// iOS 26+: LiquidGlass no longer inherits the foreground color from the navigation bar's TintColor.
+		/// Explicitly set TintColor on each right bar button item to ensure the Shell.ForegroundColor is applied.
+		void UpdateRightBarButtonItemTintColors()
+		{
+			if (!(OperatingSystem.IsIOSVersionAtLeast(26) || OperatingSystem.IsMacCatalystVersionAtLeast(26)))
+			{
+				return;
+			}
+
+			if (NavigationItem?.RightBarButtonItems is not { Length: > 0 } rightItems)
+			{
+				return;
+			}
+
+			var foregroundColor = _context?.Shell?.CurrentPage?.GetValue(Shell.ForegroundColorProperty) ??
+								_context?.Shell?.GetValue(Shell.ForegroundColorProperty);
+
+			var platformColor = foregroundColor is Graphics.Color shellForegroundColor
+				? shellForegroundColor.ToPlatform()
+				: null;
+
+			foreach (var item in rightItems)
+			{
+				item.TintColor = platformColor;
+			}
+		}
+
 		void UpdateLeftToolbarItems()
 		{
 			var shell = _context?.Shell;

src/Controls/tests/TestCases.HostApp/Issues/Issue34083.cs

@@ -0,0 +1,32 @@
+namespace Maui.Controls.Sample.Issues;
+
+[Issue(IssueTracker.Github, 34083, "Toolbar Items Do Not Reflect Shell ForegroundColor", PlatformAffected.iOS)]
+public class Issue34083 : Shell
+{
+	public Issue34083()
+	{
+		Items.Add(new Issue34083Page());
+		Shell.SetForegroundColor(this, Colors.Purple);
+	}
+
+	public class Issue34083Page : ContentPage
+	{
+		public Issue34083Page()
+		{
+			Title = "Home";
+			ToolbarItems.Add(new ToolbarItem
+			{
+				IconImageSource = "calculator.png",
+				Order = ToolbarItemOrder.Primary
+			});
+
+			Content = new Label
+			{
+				Text = "The test passes if the color is being applied to the toolbar.",
+				AutomationId = "Issue34083_DescriptionLabel",
+				HorizontalOptions = LayoutOptions.Center,
+				VerticalOptions = LayoutOptions.Center
+			};
+		}
+	}
+}

src/Controls/tests/TestCases.Shared.Tests/Tests/Issues/Issue34083.cs

@@ -0,0 +1,24 @@
+#if TEST_FAILS_ON_ANDROID && TEST_FAILS_ON_WINDOWS // Android Issue Link: https://github.com/dotnet/maui/issues/24676, Windows Issue Link: https://github.com/dotnet/maui/issues/34071
+using NUnit.Framework;
+using UITest.Appium;
+using UITest.Core;
+
+namespace Microsoft.Maui.TestCases.Tests.Issues;
+
+public class Issue34083 : _IssuesUITest
+{
+	public Issue34083(TestDevice testDevice) : base(testDevice)
+	{
+	}
+
+	public override string Issue => "Toolbar Items Do Not Reflect Shell ForegroundColor";
+
+	[Test]
+	[Category(UITestCategories.Shell)]
+	public void VerifyShellForegroundColorIsAppliedToToolbarItems()
+	{
+		App.WaitForElement("Issue34083_DescriptionLabel");
+		VerifyScreenshot();
+	}
+}
+#endif