[iOS][CV2] Fix page can be dragged down, and it would cause an extra space between Header and EmptyView text

src/Controls/src/Core/Handlers/Items2/iOS/ItemsViewController2.cs

@@ -605,8 +605,15 @@ virtual internal CGRect LayoutEmptyView()
 
 			if (_emptyViewFormsElement != null && ((IElementController)ItemsView).LogicalChildren.IndexOf(_emptyViewFormsElement) != -1)
 			{
-				_emptyViewFormsElement.Measure(frame.Width, frame.Height);
-				_emptyViewFormsElement.Arrange(frame.ToRectangle());
+				if (frame.Width > 0 && frame.Height > 0)
+				{
+					_emptyViewFormsElement.Measure(frame.Width, frame.Height);
+
+					// Arrange in the native container's local coordinate space (0,0).
+					// The native container (_emptyUIView) is already positioned correctly by iOS,
+					// so the MAUI element just needs to fill its container without additional offset.
+					_emptyViewFormsElement.Arrange(new Rect(0, 0, frame.Width, frame.Height));
+				}
 			}
 
 			_emptyUIView.Frame = frame;

src/Controls/tests/TestCases.HostApp/Issues/Issue31465.cs

@@ -0,0 +1,68 @@
+using System.Collections.ObjectModel;
+
+namespace Maui.Controls.Sample.Issues;
+
+[Issue(IssueTracker.Github, 31465, "The page can be dragged down, and it would cause an extra space between Header and EmptyView text.", PlatformAffected.iOS)]
+public class Issue31465 : ContentPage
+{
+	public Issue31465()
+	{
+		var grid = new Grid
+        {
+            Margin = new Thickness(20),
+            RowDefinitions =
+            {
+                new RowDefinition { Height = GridLength.Auto },
+                new RowDefinition { Height = GridLength.Star }
+            }
+        };
+
+        // Header Label
+        var headerLabel = new Label
+		{
+			Text = "Test for CollectionView empty view positioning",
+			AutomationId = "HeaderLabel",
+        };
+        Grid.SetRow(headerLabel, 0);
+        grid.Children.Add(headerLabel);
+
+        // CollectionView
+        var collectionView = new CollectionView
+        {
+			AutomationId = "CollectionView",
+            ItemsSource = Array.Empty<string>(), // empty array to trigger EmptyView
+            ItemTemplate = new DataTemplate(() =>
+            {
+                return new Label
+                {
+                    TextColor = Colors.Black,
+                    FontSize = 16,
+                    // This binding works with string items
+                    BindingContext = "{Binding .}" 
+                };
+            })
+        };
+
+        // EmptyView
+        collectionView.EmptyView = new Label
+        {
+            BackgroundColor = Color.FromArgb("#FFE40606"),
+            Text = "EmptyView: This should show when no data.",
+            TextColor = Color.FromArgb("#512BD4")
+        };
+
+        collectionView.Header = new Button
+        {
+            AutomationId = "CollectionViewHeader",
+            BackgroundColor = Colors.LightBlue,
+            Text = "Click me to verify the EmptyView position",
+            TextColor = Color.FromArgb("#512BD4")
+        };
+
+        Grid.SetRow(collectionView, 1);
+        grid.Children.Add(collectionView);
+
+        // Set ContentPage content
+        Content = grid;
+	}
+}

src/Controls/tests/TestCases.Shared.Tests/Tests/Issues/Issue31465.cs

@@ -0,0 +1,20 @@
+using NUnit.Framework;
+using UITest.Appium;
+using UITest.Core;
+
+namespace Microsoft.Maui.TestCases.Tests.Issues;
+
+public class Issue31465 : _IssuesUITest
+{
+	public Issue31465(TestDevice device) : base(device) { }
+
+	public override string Issue => "The page can be dragged down, and it would cause an extra space between Header and EmptyView text.";
+	[Test]
+	[Category(UITestCategories.CollectionView)]
+	public void VerifyCollectionViewEmptyView()
+	{
+		App.WaitForElement("HeaderLabel");
+		App.Click("CollectionViewHeader");
+		VerifyScreenshot();
+	}
+}