[iOS, macOS] Fixed Shell Flyout Icon is always black in iOS 26

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

@@ -7,6 +7,7 @@
 using System.Windows.Input;
 using CoreGraphics;
 using Foundation;
+using Microsoft.Maui.Graphics;
 using Microsoft.Maui.Graphics.Platform;
 using UIKit;
 using static Microsoft.Maui.Controls.Compatibility.Platform.iOS.AccessibilityExtensions;
@@ -498,13 +499,13 @@ void UpdateLeftToolbarItems()
 
 				UIImage? icon = null;
 
+				var foregroundColor = _context?.Shell.CurrentPage?.GetValue(Shell.ForegroundColorProperty) as Color ??
+					_context?.Shell.GetValue(Shell.ForegroundColorProperty) as Color;
+
 				if (image is not null)
 				{
 					icon = result?.Value;
 
-					var foregroundColor = _context?.Shell.CurrentPage?.GetValue(Shell.ForegroundColorProperty) ??
-					_context?.Shell.GetValue(Shell.ForegroundColorProperty);
-
 					if (foregroundColor is null)
 					{
 						icon = icon?.ImageWithRenderingMode(UIImageRenderingMode.AlwaysOriginal);
@@ -542,6 +543,16 @@ void UpdateLeftToolbarItems()
 				{
 					NavigationItem.LeftBarButtonItem =
 						new UIBarButtonItem(icon, UIBarButtonItemStyle.Plain, (s, e) => LeftBarButtonItemHandler(ViewController, IsRootPage)) { Enabled = enabled };
+
+					// For iOS 26+, explicitly set the tint color on the bar button item
+					// because the navigation bar's tint color is not automatically inherited
+					if (OperatingSystem.IsIOSVersionAtLeast(26) || OperatingSystem.IsMacCatalystVersionAtLeast(26))
+					{
+						if (foregroundColor is not null)
+						{
+							NavigationItem.LeftBarButtonItem.TintColor = foregroundColor.ToPlatform();
+						}
+					}
 				}
 				else
 				{

src/Controls/tests/TestCases.HostApp/Issues/Issue32867.cs

@@ -0,0 +1,42 @@
+namespace Maui.Controls.Sample.Issues;
+
+[Issue(IssueTracker.Github, 32867, "Shell Flyout Icon is always black", PlatformAffected.iOS)]
+public class Issue32867 : Shell
+{
+    public Issue32867()
+    {
+        // Create a simple ShellContent with a content page
+        var shellContent = new ShellContent
+        {
+            Title = "Home",
+
+            Content = new Issue32867Page()
+        };
+        FlyoutBehavior = FlyoutBehavior.Flyout;
+        FlyoutIcon = "shopping_cart.png";
+        Items.Add(shellContent);
+
+        // Set Shell ForegroundColor (affects FlyoutIcon tint)
+        Shell.SetForegroundColor(this, Colors.Red);
+    }
+}
+public class Issue32867Page : ContentPage
+{
+    public Issue32867Page()
+    {
+        Content = new VerticalStackLayout
+        {
+            Padding = 20,
+            Spacing = 10,
+            Children =
+            {
+                new Label
+                {
+                    Text = "The test passes if the Flyout icon appears in red (not black).",
+                    AutomationId = "Issue32867Label"
+                },
+
+            }
+        };
+    }
+}

src/Controls/tests/TestCases.Shared.Tests/Tests/Issues/Issue32867.cs

@@ -0,0 +1,22 @@
+#if TEST_FAILS_ON_WINDOWS // https://github.com/dotnet/maui/issues/26148
+using NUnit.Framework;
+using UITest.Appium;
+using UITest.Core;
+namespace Microsoft.Maui.TestCases.Tests.Issues;
+
+public class Issue32867 : _IssuesUITest
+{
+    public Issue32867(TestDevice testDevice) : base(testDevice)
+    {
+    }
+    public override string Issue => "Shell Flyout Icon is always black";
+
+    [Test]
+    [Category(UITestCategories.Shell)]
+    public void ShellFlyoutIconShouldNotBeBlack()
+    {
+        App.WaitForElement("Issue32867Label");
+        VerifyScreenshot();
+    }
+}
+#endif