Added a UI Test (dotnet#14471)

src/Controls/tests/TestCases.HostApp/Issues/Issue14471.xaml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<Shell xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
+    xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
+    x:Class="Maui.Controls.Sample.Issues.Issue14471"
+    xmlns:ns="clr-namespace:Maui.Controls.Sample.Issues">
+    <TabBar>
+        <ShellContent Route="tab1" Title="tab1" ContentTemplate="{DataTemplate ns:Issue14471Tab1Content}"/>
+        <ShellContent Route="tab2" Title="tab2" ContentTemplate="{DataTemplate ns:Issue14471Tab2Content}"/>
+    </TabBar>
+</Shell>

src/Controls/tests/TestCases.HostApp/Issues/Issue14471.xaml.cs

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+namespace Maui.Controls.Sample.Issues
+{
+	[XamlCompilation(XamlCompilationOptions.Compile)]
+	[Issue(IssueTracker.Github, 14471, "Image can disappear when going back to the page", PlatformAffected.Android)]
+	public partial class Issue14471 : Shell
+	{
+		public Issue14471()
+		{
+			InitializeComponent();
+		}
+	}
+
+	public class Issue14471Tab1Content : ContentPage
+	{
+
+		public Issue14471Tab1Content()
+		{
+			Image image = new Image() { HeightRequest = 100, AutomationId = "image" };
+			Content = new VerticalStackLayout()
+			{
+				new Button() 
+				{ 
+					AutomationId = "switchToTab2Button",
+					Text = "Switch to tab 2",
+					Command = new Command(async () => await Shell.Current.GoToAsync("//tab2"))
+				},
+				image
+			};
+			LoadImageAndSwitchTabAsync(image);
+		}
+
+		async void LoadImageAndSwitchTabAsync(Image image)
+		{
+			await Task.Delay(1);
+			var imageBytes = Convert.FromBase64String("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");
+    		image.Source = ImageSource.FromStream(() => new MemoryStream(imageBytes));
+		}
+	}
+
+	public class Issue14471Tab2Content : ContentPage
+	{
+		public Issue14471Tab2Content()
+		{
+			Content = new Button()
+			{
+				AutomationId = "switchToTab1Button",
+				Text = "Switch to tab 1",
+				Command = new Command(async () => await Shell.Current.GoToAsync("//tab1"))
+			};
+		}
+	}
+}

src/Controls/tests/TestCases.Shared.Tests/Tests/Issues/Issue14471.cs

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+using NUnit.Framework;
+using UITest.Appium;
+using UITest.Core;
+
+namespace Microsoft.Maui.TestCases.Tests.Issues;
+
+public class Issue14471 : _IssuesUITest
+{
+	public Issue14471(TestDevice device) : base(device){ }
+
+	public override string Issue => "Image can disappear when going back to the page";
+
+	[Test]
+	[Category(UITestCategories.Image)]
+	public void Issue14471Test()
+	{
+		App.WaitForElement("image");
+		App.Click("switchToTab2Button");
+		App.WaitForElement("switchToTab1Button");
+		App.Click("switchToTab1Button");
+		App.WaitForElement("image");
+
+		// The test passes if image is loaded
+		VerifyScreenshot();
+	}
+}