Fixed Rectangle appears blurred on iOS and macOS when its bounds are changed at runtime

src/Controls/tests/TestCases.HostApp/Issues/Issue32042.cs

@@ -0,0 +1,69 @@
+using Microsoft.Maui.Controls.Shapes;
+using Microsoft.Maui.Layouts;
+
+namespace Maui.Controls.Sample.Issues;
+
+[Issue(IssueTracker.Github, 32042, "Rectangle appears blurred on iOS and macOS when its bounds are changed at runtime within an AbsoluteLayout", PlatformAffected.iOS | PlatformAffected.macOS)]
+public class Issue32042 : ContentPage
+{
+	AbsoluteLayout absoluteLayout;
+	Rectangle rectangle;
+	Button changeBoundsButton;
+
+	public Issue32042()
+	{
+		// Create the AbsoluteLayout
+		absoluteLayout = new AbsoluteLayout
+		{
+			BackgroundColor = Colors.LightGray
+		};
+
+		// Create the Rectangle
+		rectangle = new Rectangle
+		{
+			BackgroundColor = Colors.Green,
+		};
+
+		// Create the description label
+		Label label = new Label
+		{
+			Text = "The green square must remain sharp after its bounds are updated at runtime; otherwise test failed.",
+			LineBreakMode = LineBreakMode.WordWrap,
+			MaximumWidthRequest = 300,
+		};
+
+		// Position the label at the top
+		AbsoluteLayout.SetLayoutBounds(label, new Rect(0.5, 0, AbsoluteLayout.AutoSize, AbsoluteLayout.AutoSize));
+		AbsoluteLayout.SetLayoutFlags(label, AbsoluteLayoutFlags.PositionProportional);
+
+		// Initially set Rectangle position below the label
+		AbsoluteLayout.SetLayoutBounds(rectangle, new Rect(0.5, 0.3, AbsoluteLayout.AutoSize, AbsoluteLayout.AutoSize));
+		AbsoluteLayout.SetLayoutFlags(rectangle, AbsoluteLayoutFlags.PositionProportional);
+
+		// Create the Button
+		changeBoundsButton = new Button
+		{
+			Text = "Change Bounds",
+			AutomationId = "Issue32042Button"
+		};
+
+		AbsoluteLayout.SetLayoutBounds(changeBoundsButton, new Rect(0.5, 0.9, AbsoluteLayout.AutoSize, AbsoluteLayout.AutoSize));
+		AbsoluteLayout.SetLayoutFlags(changeBoundsButton, AbsoluteLayoutFlags.PositionProportional);
+
+		// Attach click event
+		changeBoundsButton.Clicked += OnChangeBoundsClicked;
+
+		// Add children to layout - order matters for z-index
+		absoluteLayout.Children.Add(label);
+		absoluteLayout.Children.Add(rectangle);
+		absoluteLayout.Children.Add(changeBoundsButton);
+
+		// Set the Content of the page
+		Content = absoluteLayout;
+	}
+
+	void OnChangeBoundsClicked(object sender, EventArgs e)
+	{
+		AbsoluteLayout.SetLayoutBounds(rectangle, new Rect(0.5, 0.5, 100, 100));
+	}
+}

src/Controls/tests/TestCases.Shared.Tests/Tests/Issues/Issue32042.cs

@@ -0,0 +1,22 @@
+using NUnit.Framework;
+using UITest.Appium;
+using UITest.Core;
+
+namespace Microsoft.Maui.TestCases.Tests.Issues;
+
+public class Issue32042 : _IssuesUITest
+{
+    public Issue32042(TestDevice testDevice) : base(testDevice)
+    {
+    }
+    public override string Issue => "Rectangle appears blurred on iOS and macOS when its bounds are changed at runtime within an AbsoluteLayout";
+
+    [Test]
+    [Category(UITestCategories.Shape)]
+    public void RectangleShouldNotBeBlurredAfterBoundsChange()
+    {
+        App.WaitForElement("Issue32042Button");
+        App.Tap("Issue32042Button");
+        VerifyScreenshot();
+    }
+}

src/Core/src/Platform/iOS/MauiShapeView.cs

@@ -11,6 +11,8 @@ public class MauiShapeView : PlatformGraphicsView, IUIViewLifeCycleEvents
 		public MauiShapeView()
 		{
 			BackgroundColor = UIColor.Clear;
+			// Redraw the shape when bounds change to prevent blur during resizing in container layouts.
+			ContentMode = UIViewContentMode.Redraw;
 		}
 
 		[UnconditionalSuppressMessage("Memory", "MEM0002", Justification = IUIViewLifeCycleEvents.UnconditionalSuppressMessage)]