Navigation from the 'more' tab

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

@@ -75,7 +75,6 @@ public override UIViewController SelectedViewController
 				{
 					ShellItem.SetValueFromRenderer(ShellItem.CurrentItemProperty, renderer.ShellSection);
 					CurrentRenderer = renderer;
-					MoreNavigationController?.PopToRootViewController(false);
 				}
 
 				if (ReferenceEquals(value, MoreNavigationController))

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

@@ -588,12 +588,24 @@ public override UIViewController[] PopToViewController(UIViewController viewCont
 		public override void PushViewController(UIViewController viewController, bool animated)
 		{
 			_pendingViewControllers = null;
-			base.PushViewController(viewController, animated);
+			if (IsInMoreTab && ParentViewController is UITabBarController tabBarController)
+			{
+				tabBarController.MoreNavigationController.PushViewController(viewController, animated);
+			}
+			else
+			{
+				base.PushViewController(viewController, animated);
+			}
 		}
 
 		public override UIViewController PopViewController(bool animated)
 		{
 			_pendingViewControllers = null;
+			if (IsInMoreTab && ParentViewController is UITabBarController tabBarController)
+			{
+				return tabBarController.MoreNavigationController.PopViewController(animated);
+			}
+
 			return base.PopViewController(animated);
 		}
 

src/Controls/tests/TestCases.HostApp/Issues/Issue18193.cs

@@ -0,0 +1,88 @@
+namespace Maui.Controls.Sample.Issues
+{
+	[Issue(IssueTracker.Github, 18193, "[iOS] Navigation doesn't work on sixth tab in shell", PlatformAffected.iOS)]
+	public class Issue18193 : Shell
+	{
+		public Issue18193()
+		{
+			var tabBar = new TabBar();
+
+			tabBar.Items.Add(CreateShellContent("MainPage", typeof(Issue18193MainPage), nameof(Issue18193MainPage)));
+			tabBar.Items.Add(CreateShellContent("Page 2", typeof(Issue18193Page2), nameof(Issue18193Page2)));
+			tabBar.Items.Add(CreateShellContent("Page 3", typeof(Issue18193Page3), nameof(Issue18193Page3)));
+			tabBar.Items.Add(CreateShellContent("Page 4", typeof(Issue18193Page4), nameof(Issue18193Page4)));
+			tabBar.Items.Add(CreateShellContent("Page 5", typeof(Issue18193Page5), nameof(Issue18193Page5)));
+			tabBar.Items.Add(CreateShellContent("Page 6", typeof(Issue18193Page6), nameof(Issue18193Page6)));
+
+			Items.Add(tabBar);
+			Routing.RegisterRoute(nameof(Issue18193DetailPage), typeof(Issue18193DetailPage));
+		}
+
+		ShellContent CreateShellContent(string title, Type contentType, string route) => new()
+		{
+			Title = title,
+			ContentTemplate = new DataTemplate(contentType),
+			Route = route
+		};
+	}
+
+	class Issue18193MainPage : ContentPage
+	{
+		public Issue18193MainPage()
+		{
+			var button = new Button() { AutomationId = "NavigationToPage6Button", Text = "Navigate to page 6" };
+			button.Clicked += (s, e) => Issue18193.Current.GoToAsync("//" + nameof(Issue18193Page6));
+			Content = button;
+		}
+	}
+
+	class Issue18193DetailPage : ContentPage
+	{
+		public Issue18193DetailPage()
+		{
+			Title = "Detail Page";
+			var button = new Button() { AutomationId = "NavigateBackButton", Text = "Navigate back" };
+			button.Clicked += (s, e) => Issue18193.Current.GoToAsync("..");
+			Content = button;
+		}
+	}
+
+	class Issue18193Page2 : ContentPage
+	{
+		public Issue18193Page2()
+		{
+			Content = new Button()
+			{
+				Text = "Navigate to page 5",
+				Command = new Command(async () => await Issue18193.Current.GoToAsync("//" + nameof(Issue18193Page5))),
+				AutomationId = "NavigateToPage5Button"
+			};
+		}
+	}
+
+	public class Issue18193Page3 : ContentPage { }
+
+	public class Issue18193Page4 : ContentPage { }
+
+	public class Issue18193Page5 : ContentPage { }
+
+	public class Issue18193Page6 : ContentPage
+	{
+		public Issue18193Page6()
+		{
+			var button = new Button() { AutomationId = "NavigateToDetailButton", Text = "Navigate to detail page" };
+			button.Clicked += (s, e) => Issue18193.Current.GoToAsync(nameof(Issue18193DetailPage));
+
+			var button2 = new Button() { AutomationId = "NavigateToPage2Button", Text = "Navigate to Page 2" };
+			button2.Clicked += (s, e) => Issue18193.Current.GoToAsync("//" + nameof(Issue18193Page2));
+			Content = new StackLayout
+			{
+				Children =
+				{
+					button,
+					button2
+				}
+			};
+		}
+	}
+}

src/Controls/tests/TestCases.Shared.Tests/Tests/Issues/Issue18193.cs

@@ -0,0 +1,35 @@
+#if IOS
+using NUnit.Framework;
+using UITest.Appium;
+using UITest.Core;
+
+namespace Microsoft.Maui.TestCases.Tests.Issues
+{
+	public class Issue18193 : _IssuesUITest
+	{
+		public override string Issue => "[iOS] Navigation doesn't work on sixth tab in shell";
+
+		public Issue18193(TestDevice testDevice) : base(testDevice)
+		{
+		}
+
+		[Test]
+		[Category(UITestCategories.Shell)]
+		public void ShellNavigationShouldWorkInMoreTab()
+		{
+			App.WaitForElement("NavigationToPage6Button");
+			App.Click("NavigationToPage6Button");
+			App.WaitForElement("NavigateToDetailButton");
+			App.Click("NavigateToDetailButton");
+			App.WaitForElement("NavigateBackButton");
+			App.Click("NavigateBackButton");
+			App.WaitForElement("NavigateToPage2Button");
+			App.Click("NavigateToPage2Button");
+			App.WaitForElement("NavigateToPage5Button");
+			App.Click("NavigateToPage5Button");
+			App.WaitForElement("More");
+			App.Click("More");
+		}
+	}
+}
+#endif

src/Controls/tests/TestCases.Shared.Tests/Tests/Issues/XFIssue/Issue6784.cs

@@ -36,6 +36,10 @@ public void OneMoreControllerOpensOnFirstClick()
 		App.Tap("Tab 4");
 		App.WaitForElement("More");
 		App.Tap("More");
+		// On iOS and Mac Catalyst, the first 'more' tab goes back to tab 11, the second click goes to the 'more' menu
+#if IOS || MACCATALYST
+		App.Tap("More");
+#endif
 		App.WaitForElement("Tab 12");
 		App.Tap("Tab 12");
 	}