Fix iOS/macOS Images not cropped inside of a Frame #6580

src/Controls/src/Core/Compatibility/Handlers/Android/FrameRenderer.cs

@@ -205,8 +205,7 @@ void UpdateClippedToBounds()
 			if (Element == null)
 				return;
 
-			var shouldClip = Element.IsSet(Microsoft.Maui.Controls.Compatibility.Layout.IsClippedToBoundsProperty)
-					? Element.IsClippedToBounds : Element.CornerRadius > 0f;
+			var shouldClip = Element.IsClippedToBoundsSet(Element.CornerRadius > 0f);
 
 			this.SetClipToOutline(shouldClip);
 		}

src/Controls/src/Core/Compatibility/Handlers/iOS/FrameRenderer.cs

@@ -120,7 +120,7 @@ public virtual void SetupLayer()
 
 			_actualView.Layer.RasterizationScale = UIScreen.MainScreen.Scale;
 			_actualView.Layer.ShouldRasterize = true;
-			_actualView.Layer.MasksToBounds = Element.IsClippedToBounds;
+			_actualView.Layer.MasksToBounds = Element.IsClippedToBoundsSet(true);
 		}
 
 		void UpdateShadow()

src/Controls/src/Core/Frame.cs

@@ -83,4 +83,10 @@ void IBorderElement.OnBorderColorPropertyChanged(Color oldValue, Color newValue)
 
 		bool IBorderElement.IsBorderWidthSet() => false;
 	}
+
+	internal static class FrameExtensions
+	{
+		internal static bool IsClippedToBoundsSet(this Frame frame, bool defaultValue) =>
+			frame.IsSet(Compatibility.Layout.IsClippedToBoundsProperty) ? frame.IsClippedToBounds : defaultValue;
+	}
 }

src/Controls/tests/DeviceTests/Elements/Frame/FrameTests.iOS.cs

@@ -47,5 +47,40 @@ await InvokeOnMainThreadAsync(() =>
 					}
 				}));				
 		}
+
+		[Theory(DisplayName = "Frame's Content Clips to Bounds Properly")]
+		[InlineData(true)]
+		[InlineData(false)]
+		[InlineData(null)]
+		public async Task FrameClipsCorrectly(bool? isClipped)
+		{
+			SetupBuilder();
+
+			var frame = new Frame()
+			{
+				HeightRequest = 300,
+				WidthRequest = 300,
+				CornerRadius = 80,
+				Content = new Frame
+				{
+					HeightRequest = 400,
+					WidthRequest = 400,
+					BackgroundColor = Colors.Blue,
+				}
+			};
+
+			if (isClipped is bool clipped)
+				frame.IsClippedToBounds = clipped!;
+
+			await InvokeOnMainThreadAsync(() =>
+				frame.ToPlatform(MauiContext).AttachAndRun(() =>
+				{
+					var handler = frame.ToHandler(MauiContext);
+					if (isClipped == false)
+						Assert.False(handler.PlatformView.ClipsToBounds);
+					else
+						Assert.True(handler.PlatformView.ClipsToBounds);
+				}));
+		}
 	}
-}
+}