[iOS 26] Fix back button color not applied for NavigationPage

src/Controls/src/Core/Compatibility/Handlers/NavigationPage/iOS/NavigationRenderer.cs

@@ -954,15 +954,46 @@ void UpdateBarTextColor()
 				? UINavigationBar.Appearance.TintColor
 				: iconColor.ToPlatform();
 
-			if ((OperatingSystem.IsIOSVersionAtLeast(26) || OperatingSystem.IsMacCatalystVersionAtLeast(26)) && NavigationBar.TintColor is not null)
+			// iOS 26+ Liquid Glass ignores TintColor for the back button; apply via appearance instead.
+			if (OperatingSystem.IsIOSVersionAtLeast(26) || OperatingSystem.IsMacCatalystVersionAtLeast(26))
 			{
-				if (VisibleViewController?.NavigationItem?.RightBarButtonItems is UIBarButtonItem[] items)
+				if (NavigationBar.TintColor is not null && VisibleViewController?.NavigationItem?.RightBarButtonItems is UIBarButtonItem[] items)
 				{
 					foreach (var item in items)
 					{
 						item.TintColor = NavigationBar.TintColor;
 					}
 				}
+
+				var useCustomColor = iconColor != null && NavPage.OnThisPlatform().GetStatusBarTextColorMode() != StatusBarTextColorMode.DoNotAdjust;
+				if (useCustomColor)
+				{
+					var backColor = iconColor.ToPlatform();
+					var colorAttributes = NSDictionary<NSString, NSObject>.FromObjectsAndKeys(
+						new NSObject[] { backColor }, new NSString[] { UIStringAttributeKey.ForegroundColor });
+					var appearance = new UIBarButtonItemAppearance(UIBarButtonItemStyle.Plain);
+					appearance.Normal.TitleTextAttributes = colorAttributes;
+					appearance.Highlighted.TitleTextAttributes = colorAttributes;
+					NavigationBar.CompactAppearance.BackButtonAppearance = appearance;
+					NavigationBar.StandardAppearance.BackButtonAppearance = appearance;
+					NavigationBar.ScrollEdgeAppearance.BackButtonAppearance = appearance;
+
+					var backimage = UIImage.GetSystemImage("chevron.backward");
+					if (backimage is not null)
+					{
+						var tinted = backimage.ApplyTintColor(backColor).ImageWithRenderingMode(UIImageRenderingMode.AlwaysOriginal);
+						NavigationBar.BackIndicatorImage = tinted;
+						NavigationBar.BackIndicatorTransitionMaskImage = tinted;
+					}
+				}
+				else
+				{
+					NavigationBar.CompactAppearance.BackButtonAppearance = null;
+					NavigationBar.StandardAppearance.BackButtonAppearance = null;
+					NavigationBar.ScrollEdgeAppearance.BackButtonAppearance = null;
+					NavigationBar.BackIndicatorImage = null;
+					NavigationBar.BackIndicatorTransitionMaskImage = null;
+				}
 			}
 		}
 
@@ -972,7 +1003,7 @@ void SetStatusBarStyle()
 			{
 				return;
 			}
-			
+
 			var barTextColor = NavPage.BarTextColor;
 			var statusBarColorMode = NavPage.OnThisPlatform().GetStatusBarTextColorMode();
 

src/Controls/tests/TestCases.Shared.Tests/Tests/FeatureMatrix/NavigationPageFeatureTests.cs

@@ -314,10 +314,6 @@ public void TitleIcon_AddingTwice_DoesNotDuplicate()
 		[Test, Order(13)]
 		public void Combine_BarBackgroundColor_TextColor_IconColor_Visual()
 		{
-			if (App is AppiumIOSApp iosApp && HelperExtensions.IsIOS26OrHigher(iosApp))
-			{
-				Assert.Ignore("Ignored due to a bug issue in iOS 26"); // Issue Link: https://github.com/dotnet/maui/issues/33966
-			}
 			App.WaitForElement("ResetButton");
 			App.Tap("ResetButton");
 			// Set bar background color and text color
@@ -331,7 +327,7 @@ public void Combine_BarBackgroundColor_TextColor_IconColor_Visual()
 			App.WaitForElement("PushPageButton");
 			App.Tap("PushPageButton");
 			// Screenshot: Combined bar background, text color and icon color on pushed page
-			VerifyScreenshot(tolerance: 0.5, retryTimeout: TimeSpan.FromSeconds(2));
+			VerifyScreenshot();
 		}
 
 		[Test, Order(14)]