fix: Fix layouting on mobile

src/Uno.UI.RuntimeTests/Tests/Windows_UI_Xaml/Given_FrameworkElement.cs

@@ -638,16 +638,10 @@ public Task MeasureWithNan() =>
 				Assert.AreEqual(new Size(double.PositiveInfinity, double.PositiveInfinity), SUT.MeasureOverrides.Last());
 				Assert.AreEqual(new Size(0, 0), SUT.DesiredSize);
 
-#if __CROSSRUNTIME__
 				// Unlike WinUI, we don't crash.
 				SUT.Measure(new Size(double.NaN, double.NaN));
 				SUT.Measure(new Size(42.0, double.NaN));
 				SUT.Measure(new Size(double.NaN, 42.0));
-#else
-				Assert.ThrowsException<InvalidOperationException>(() => SUT.Measure(new Size(double.NaN, double.NaN)));
-				Assert.ThrowsException<InvalidOperationException>(() => SUT.Measure(new Size(42.0, double.NaN)));
-				Assert.ThrowsException<InvalidOperationException>(() => SUT.Measure(new Size(double.NaN, 42.0)));
-#endif
 			});
 
 		[TestMethod]
@@ -913,9 +907,6 @@ public async Task When_Native_Parent_And_Measure_Infinite()
 
 			panel.Measure(new Size(1000, 1000));
 
-			var measuredHeightLogical = Math.Round(Uno.UI.ViewHelper.PhysicalToLogicalPixels(outer.MeasuredHeight));
-			Assert.AreEqual(InnerBorderHeight, measuredHeightLogical);
-
 			outer.Arrange(new Rect(0, 0, 1000, 1000));
 			var actualHeight = Math.Round(outer.ActualHeight);
 			Assert.AreEqual(InnerBorderHeight, actualHeight);

src/Uno.UI.RuntimeTests/Tests/Windows_UI_Xaml/Given_FrameworkElement_Layouting.cs

@@ -66,15 +66,7 @@ public void When_LayoutUpdated()
 
 			using (new AssertionScope())
 			{
-#if __ANDROID__
-				// Android has an issue where LayoutUpdate is called twice, caused by the presence
-				// of two calls to arrange (Arrange, ArrangeElement(this)) in FrameworkElement.
-				// Failing to call the first Arrange makes some elements fail to have a proper size in
-				// some yet unknown conditions.
-				// Issue: https://github.com/unoplatform/uno/issues/2769
-				sutLayoutUpdate1.Should().Be(2, "sut-before");
-				sutLayoutUpdate2.Should().Be(4, "sut-after");
-#elif UNO_HAS_ENHANCED_LIFECYCLE || WINAPPSDK
+#if UNO_HAS_ENHANCED_LIFECYCLE || WINAPPSDK
 				sutLayoutUpdate1.Should().Be(0, "sut-1");
 				sutLayoutUpdate2.Should().Be(0, "sut-2");
 				sutLayoutUpdate3.Should().Be(0, "sut-3");

src/Uno.UI.RuntimeTests/Tests/Windows_UI_Xaml/Given_UIElement.TransformToVisual.cs

@@ -743,7 +743,7 @@ public async Task When_PaddedElementInScrollViewer_Then_TransformToVisual(
 		[DataRow(HorizontalAlignment.Left, VerticalAlignment.Top, 10, 0, false, false)]
 		[DataRow(HorizontalAlignment.Left, VerticalAlignment.Top, 0, 10, false, false)]
 		[DataRow(HorizontalAlignment.Left, VerticalAlignment.Top, 10, 10, false, false)]
-#if !__SKIA__ && !__WASM__
+#if !__SKIA__ && !__WASM__ && !__ANDROID__
 		[DataRow(HorizontalAlignment.Center, VerticalAlignment.Top, 0, 0, false, false)]
 		[DataRow(HorizontalAlignment.Center, VerticalAlignment.Top, 10, 0, false, false)]
 		[DataRow(HorizontalAlignment.Center, VerticalAlignment.Top, 0, 10, false, false)]
@@ -757,7 +757,7 @@ public async Task When_PaddedElementInScrollViewer_Then_TransformToVisual(
 		[DataRow(HorizontalAlignment.Stretch, VerticalAlignment.Top, 10, 0, false, false)]
 		[DataRow(HorizontalAlignment.Stretch, VerticalAlignment.Top, 0, 10, false, false)]
 		[DataRow(HorizontalAlignment.Stretch, VerticalAlignment.Top, 10, 10, false, false)]
-#if !__SKIA__ && !__WASM__
+#if !__SKIA__ && !__WASM__ && !__ANDROID__
 		[DataRow(HorizontalAlignment.Left, VerticalAlignment.Center, 0, 0, false, false)]
 		[DataRow(HorizontalAlignment.Left, VerticalAlignment.Center, 10, 0, false, false)]
 		[DataRow(HorizontalAlignment.Left, VerticalAlignment.Center, 0, 10, false, false)]
@@ -795,7 +795,7 @@ public async Task When_PaddedElementInScrollViewer_Then_TransformToVisual(
 		[DataRow(HorizontalAlignment.Left, VerticalAlignment.Stretch, 10, 0, false, false)]
 		[DataRow(HorizontalAlignment.Left, VerticalAlignment.Stretch, 0, 10, false, false)]
 		[DataRow(HorizontalAlignment.Left, VerticalAlignment.Stretch, 10, 10, false, false)]
-#if !__SKIA__ && !__WASM__
+#if !__SKIA__ && !__WASM__ && !__ANDROID__
 		[DataRow(HorizontalAlignment.Center, VerticalAlignment.Stretch, 0, 0, false, false)]
 		[DataRow(HorizontalAlignment.Center, VerticalAlignment.Stretch, 10, 0, false, false)]
 		[DataRow(HorizontalAlignment.Center, VerticalAlignment.Stretch, 0, 10, false, false)]
@@ -826,7 +826,7 @@ public async Task When_PaddedElementInScrollViewer_Then_TransformToVisual(
 		[DataRow(HorizontalAlignment.Stretch, VerticalAlignment.Top, 10, 0, true, false)]
 		[DataRow(HorizontalAlignment.Stretch, VerticalAlignment.Top, 0, 10, true, false)]
 		[DataRow(HorizontalAlignment.Stretch, VerticalAlignment.Top, 10, 10, true, false)]
-#if !__SKIA__ && !__WASM__
+#if !__SKIA__ && !__WASM__ && !__ANDROID__
 		[DataRow(HorizontalAlignment.Left, VerticalAlignment.Center, 0, 0, true, false)]
 		[DataRow(HorizontalAlignment.Left, VerticalAlignment.Center, 10, 0, true, false)]
 		[DataRow(HorizontalAlignment.Left, VerticalAlignment.Center, 0, 10, true, false)]
@@ -882,7 +882,7 @@ public async Task When_PaddedElementInScrollViewer_Then_TransformToVisual(
 		[DataRow(HorizontalAlignment.Left, VerticalAlignment.Top, 10, 0, false, true)]
 		[DataRow(HorizontalAlignment.Left, VerticalAlignment.Top, 0, 10, false, true)]
 		[DataRow(HorizontalAlignment.Left, VerticalAlignment.Top, 10, 10, false, true)]
-#if !__SKIA__ && !__WASM__
+#if !__SKIA__ && !__WASM__ && !__ANDROID__
 		[DataRow(HorizontalAlignment.Center, VerticalAlignment.Top, 0, 0, false, true)]
 		[DataRow(HorizontalAlignment.Center, VerticalAlignment.Top, 10, 0, false, true)]
 		[DataRow(HorizontalAlignment.Center, VerticalAlignment.Top, 0, 10, false, true)]
@@ -900,7 +900,7 @@ public async Task When_PaddedElementInScrollViewer_Then_TransformToVisual(
 		[DataRow(HorizontalAlignment.Left, VerticalAlignment.Center, 10, 0, false, true)]
 		[DataRow(HorizontalAlignment.Left, VerticalAlignment.Center, 0, 10, false, true)]
 		[DataRow(HorizontalAlignment.Left, VerticalAlignment.Center, 10, 10, false, true)]
-#if !__SKIA__ && !__WASM__
+#if !__SKIA__ && !__WASM__ && !__ANDROID__
 		[DataRow(HorizontalAlignment.Center, VerticalAlignment.Center, 0, 0, false, true)]
 		[DataRow(HorizontalAlignment.Center, VerticalAlignment.Center, 10, 0, false, true)]
 		[DataRow(HorizontalAlignment.Center, VerticalAlignment.Center, 0, 10, false, true)]
@@ -918,7 +918,7 @@ public async Task When_PaddedElementInScrollViewer_Then_TransformToVisual(
 		[DataRow(HorizontalAlignment.Left, VerticalAlignment.Bottom, 10, 0, false, true)]
 		[DataRow(HorizontalAlignment.Left, VerticalAlignment.Bottom, 0, 10, false, true)]
 		[DataRow(HorizontalAlignment.Left, VerticalAlignment.Bottom, 10, 10, false, true)]
-#if !__SKIA__ && !__WASM__
+#if !__SKIA__ && !__WASM__ && !__ANDROID__
 		[DataRow(HorizontalAlignment.Center, VerticalAlignment.Bottom, 0, 0, false, true)]
 		[DataRow(HorizontalAlignment.Center, VerticalAlignment.Bottom, 10, 0, false, true)]
 		[DataRow(HorizontalAlignment.Center, VerticalAlignment.Bottom, 0, 10, false, true)]
@@ -936,7 +936,7 @@ public async Task When_PaddedElementInScrollViewer_Then_TransformToVisual(
 		[DataRow(HorizontalAlignment.Left, VerticalAlignment.Stretch, 10, 0, false, true)]
 		[DataRow(HorizontalAlignment.Left, VerticalAlignment.Stretch, 0, 10, false, true)]
 		[DataRow(HorizontalAlignment.Left, VerticalAlignment.Stretch, 10, 10, false, true)]
-#if !__SKIA__ && !__WASM__
+#if !__SKIA__ && !__WASM__ && !__ANDROID__
 		[DataRow(HorizontalAlignment.Center, VerticalAlignment.Stretch, 0, 0, false, true)]
 		[DataRow(HorizontalAlignment.Center, VerticalAlignment.Stretch, 10, 0, false, true)]
 		[DataRow(HorizontalAlignment.Center, VerticalAlignment.Stretch, 0, 10, false, true)]

src/Uno.UI.RuntimeTests/Tests/Windows_UI_Xaml/Given_UIElement.cs

@@ -938,11 +938,7 @@ public async Task When_InvalidatingMeasureExplicitly()
 
 			using var _ = new AssertionScope();
 
-#if __ANDROID__
-			ctl1.MeasureCount.Should().Be(2);
-#else
 			ctl1.MeasureCount.Should().Be(1);
-#endif
 			ctl2.MeasureCount.Should().Be(2);
 			ctl3.MeasureCount.Should().Be(1);
 
@@ -1161,6 +1157,7 @@ private partial class MeasureAndArrangeCounter : Panel
 		{
 			internal int MeasureCount;
 			internal int ArrangeCount;
+
 			protected override Size MeasureOverride(Size availableSize)
 			{
 				MeasureCount++;

src/Uno.UI.RuntimeTests/Tests/Windows_UI_Xaml_Controls/Given_ContentControl.cs

@@ -193,13 +193,8 @@ public async Task When_Content_Set_Null_ComboBox()
 
 			contentControl.Content = null;
 
-#if __IOS__ || __ANDROID__
-			Assert.AreEqual(0, comboBox.Items.Count);
-			Assert.AreEqual(-1, comboBox.SelectedIndex);
-#else // this is correct
 			Assert.AreEqual(3, comboBox.Items.Count);
 			Assert.AreEqual(1, comboBox.SelectedIndex);
-#endif
 		}
 
 #if HAS_UNO

src/Uno.UI.RuntimeTests/Tests/Windows_UI_Xaml_Controls/Given_GridLayouting.cs

@@ -1103,11 +1103,7 @@ public void When_Grid_Has_Three_Element_With_ColSpan_and_Four_Progressing_Column
 
 		SUT.Arrange(new Rect(0, 0, 20, 20));
 
-#if __ANDROID__ || __IOS__ || __MACOS__
-		c1.SizePassedToArrangeOverride.Should().Be(new Size(6, 10));
-#else
 		c1.SizePassedToArrangeOverride.Should().Be(new Size(10, 10));
-#endif
 		LayoutInformation.GetLayoutSlot(c1).Should().Be(new Rect(0, 0, 6, 10));
 
 		c2.SizePassedToArrangeOverride.Should().Be(new Size(10, 11));
@@ -1885,17 +1881,11 @@ public void When_One_Child_With_Margin_1234_Size8()
 		SUT.Measure(new Size(8, 8));
 
 		SUT.DesiredSize.Should().Be(new Size(8, 8));
-#if UNO_REFERENCE_API
+#if !WINAPPSDK
 		GetUnclippedDesiredSize(SUT).Should().Be(new Size(8, 8));
-#elif !WINAPPSDK
-		GetUnclippedDesiredSize(SUT).Should().Be(new Size(8, 10));
 #endif
 
-#if UNO_REFERENCE_API
 		c1.DesiredSize.Should().Be(new Size(4, 4));
-#else
-		c1.DesiredSize.Should().Be(new Size(4, 6));
-#endif
 #if !WINAPPSDK
 		GetUnclippedDesiredSize(c1).Should().Be(new Size(0, 0)); // UnclippedDesiredSize excludes margins
 #endif
@@ -1908,11 +1898,7 @@ public void When_One_Child_With_Margin_1234_Size8()
 		c1.SizePassedToArrangeOverride.Should().Be(default);
 		c1.SizePassedToMeasureOverride.Should().Be(default);
 		LayoutInformation.GetAvailableSize(c1).Should().Be(new Size(4, 4));
-#if UNO_REFERENCE_API || WINAPPSDK
 		LayoutInformation.GetLayoutSlot(c1).Should().Be(new Rect(2, 2, 4, 4));
-#else
-		LayoutInformation.GetLayoutSlot(c1).Should().Be(new Rect(2, 2, 4, 6));
-#endif
 
 		SUT.Children.Should().HaveCount(1);
 	}
@@ -1939,16 +1925,11 @@ public void When_One_Child_With_Margin_Center_And_Center()
 		SUT.Measure(new Size(20, 20));
 		SUT.DesiredSize.Should().Be(new Size(10, 20), because: "SUT.DesiredSize");
 
-#if UNO_REFERENCE_API
+#if !WINAPPSDK
 		GetUnclippedDesiredSize(SUT).Should().Be(new Size(10, 20), because: "SUT UnclippedDesiredSize");
 #endif
 
-#if UNO_REFERENCE_API || WINAPPSDK
 		c1.DesiredSize.Should().Be(new Size(10, 20), because: "c1.DesiredSize");
-#else
-		GetUnclippedDesiredSize(SUT).Should().Be(new Size(10, 30), because: "SUT UnclippedDesiredSize");
-		c1.DesiredSize.Should().Be(new Size(10, 30), because: "c1.DesiredSize");
-#endif
 
 #if !WINAPPSDK
 		GetUnclippedDesiredSize(c1).Should().Be(new Size(10, 10), because: "c1 UnclippedDesiredSize"); // UnclippedDesiredSize excludes margins
@@ -1962,11 +1943,7 @@ public void When_One_Child_With_Margin_Center_And_Center()
 		c1.SizePassedToArrangeOverride.Should().Be(new Size(10, 10), because: "c1.SizePassedToArrangeOverride");
 #endif
 
-#if UNO_REFERENCE_API
 		c1.SizePassedToMeasureOverride.Should().Be(new Size(10, 10), because: "c1.SizePassedToMeasureOverride");
-#else
-		c1.SizePassedToMeasureOverride.Should().Be(new Size(10, 0), because: "c1.SizePassedToMeasureOverride");
-#endif
 		LayoutInformation.GetAvailableSize(c1).Should().Be(new Size(20, 20), because: "c1 AvailableSize");
 		LayoutInformation.GetLayoutSlot(c1).Should().Be(new Rect(0, 0, 50, 50), because: "c1 LayoutSlot");
 
@@ -1995,17 +1972,11 @@ public void When_One_Child_With_Margin_Center_And_Bottom()
 		SUT.Measure(new Size(20, 20));
 
 		SUT.DesiredSize.Should().Be(new Size(10, 20), because: "SUT.DesiredSize");
-#if UNO_REFERENCE_API
+#if !WINAPPSDK
 		GetUnclippedDesiredSize(SUT).Should().Be(new Size(10, 20), because: "SUT UnclippedDesiredSize");
-#elif !WINAPPSDK
-		GetUnclippedDesiredSize(SUT).Should().Be(new Size(10, 30), because: "SUT.UnclippedDesiredSize");
 #endif
 
-#if UNO_REFERENCE_API || WINAPPSDK
 		c1.DesiredSize.Should().Be(new Size(10, 20), because: "c1.DesiredSize");
-#else
-		c1.DesiredSize.Should().Be(new Size(10, 30), because: "c1.DesiredSize");
-#endif
 
 #if !WINAPPSDK
 		GetUnclippedDesiredSize(c1).Should().Be(new Size(10, 10), because: "c1 UnclippedDesiredSize"); // UnclippedDesiredSize excludes margins
@@ -2022,11 +1993,7 @@ public void When_One_Child_With_Margin_Center_And_Bottom()
 		c1.SizePassedToArrangeOverride.Should().Be(new Size(10, 10), because: "c1.SizePassedToArrangeOverride");
 #endif
 
-#if UNO_REFERENCE_API
 		c1.SizePassedToMeasureOverride.Should().Be(new Size(10, 10), because: "c1.SizePassedToMeasureOverride");
-#else
-		c1.SizePassedToMeasureOverride.Should().Be(new Size(10, 0), because: "c1.SizePassedToMeasureOverride");
-#endif
 		LayoutInformation.GetAvailableSize(c1).Should().Be(new Size(20, 20), because: "c1 AvailableSize");
 		LayoutInformation.GetLayoutSlot(c1).Should().Be(new Rect(0, 0, 50, 50), because: "c1 LayoutSlot");
 
@@ -2055,14 +2022,12 @@ public void When_One_Child_With_Margin_Center_And_Top()
 		SUT.Measure(new Size(20, 20));
 
 		SUT.DesiredSize.Should().Be(new Size(10, 20), because: "SUT.DesiredSize");
-#if UNO_REFERENCE_API
+#if !WINAPPSDK
 		GetUnclippedDesiredSize(SUT).Should().Be(new Size(10, 20), because: "SUT UnclippedDesiredSize");
-		c1.DesiredSize.Should().Be(new Size(10, 20), because: "c1.DesiredSize");
-#elif !WINAPPSDK
-		GetUnclippedDesiredSize(SUT).Should().Be(new Size(10, 30), because: "SUT UnclippedDesiredSize");
-		c1.DesiredSize.Should().Be(new Size(10, 30), because: "c1.DesiredSize");
 #endif
 
+		c1.DesiredSize.Should().Be(new Size(10, 20), because: "c1.DesiredSize");
+
 #if !WINAPPSDK
 		GetUnclippedDesiredSize(c1).Should().Be(new Size(10, 10), because: "c1 UnclippedDesiredSize"); // UnclippedDesiredSize excludes margins
 #endif
@@ -2075,11 +2040,7 @@ public void When_One_Child_With_Margin_Center_And_Top()
 		c1.SizePassedToArrangeOverride.Should().Be(new Size(10, 10), because: "c1.SizePassedToArrangeOverride");
 #endif
 
-#if UNO_REFERENCE_API
 		c1.SizePassedToMeasureOverride.Should().Be(new Size(10, 10), because: "c1.SizePassedToMeasureOverride");
-#else
-		c1.SizePassedToMeasureOverride.Should().Be(new Size(10, 0), because: "c1.SizePassedToMeasureOverride");
-#endif
 		LayoutInformation.GetAvailableSize(c1).Should().Be(new Size(20, 20), because: "c1 AvailableSize");
 		LayoutInformation.GetLayoutSlot(c1).Should().Be(new Rect(0, 0, 50, 50), because: "c1 LayoutSlot");
 
@@ -2133,13 +2094,7 @@ public void When_One_Fixed_Size_Child_With_Margin_Right_And_Stretch()
 #if !WINAPPSDK
 	private static Size GetUnclippedDesiredSize(UIElement element)
 	{
-#if UNO_REFERENCE_API
 		return element.m_unclippedDesiredSize;
-#else
-		var layouterElement = (ILayouterElement)element;
-		var layouter = (Layouter)layouterElement.Layouter;
-		return layouter._unclippedDesiredSize;
-#endif
 	}
 #endif
 

src/Uno.UI.RuntimeTests/Tests/Windows_UI_Xaml_Controls/Given_ListViewBase.Measure.cs

@@ -135,6 +135,9 @@ public async Task When_Item_Margins()
 
 		[TestMethod]
 		[RunsOnUIThread]
+#if __ANDROID__
+		[Ignore("Fails on WinUI similarly. It looks like an invalid test.")]
+#endif
 		public async Task When_Item_Changes_Measure_Count()
 		{
 			var template = (DataTemplate)_testsResources["When_Item_Changes_Measure_Count_Template"];
@@ -324,7 +327,7 @@ public async Task When_Item_Recycled_DuringScroll()
 				{
 					// We should not throw/assert here, as this event is coming straight from native without any exception-guard.
 					// Throwing in this context will cause the app to crash directly.
-					snapshots.Add((previous.Index, previous.Container.ClippedFrame));
+					snapshots.Add((previous.Index, previous.Container.m_pLayoutClipGeometry));
 				}
 
 				previousContainer = (e.ItemIndex, (ListViewItem)e.ItemContainer);

src/Uno.UI.RuntimeTests/Tests/Windows_UI_Xaml_Controls/Given_StackPanel.cs

@@ -251,24 +251,12 @@ private async Task MaxSizingTest(Size maxConstraints)
 
 				if (!double.IsInfinity(maxConstraints.Width))
 				{
-#if WINAPPSDK || __CROSSRUNTIME__
 					Assert.AreEqual(constrained.ActualWidth, orientation == Orientation.Horizontal ? 1000 : maxConstraints.Width);
-#else
-					// TODO: Align Uno with Windows behavior.
-					Assert.AreEqual(constrained.ActualWidth, maxConstraints.Width);
-#endif
-
 					Assert.AreEqual(constrained.DesiredSize.Width, maxConstraints.Width);
 				}
 				if (!double.IsInfinity(maxConstraints.Height))
 				{
-#if WINAPPSDK || __CROSSRUNTIME__
 					Assert.AreEqual(constrained.ActualHeight, orientation == Orientation.Vertical ? 1000 : maxConstraints.Height);
-#else
-					// TODO: Align Uno with Windows behavior.
-					Assert.AreEqual(constrained.ActualHeight, maxConstraints.Height);
-#endif
-
 					Assert.AreEqual(constrained.DesiredSize.Height, maxConstraints.Height);
 				}
 			}

src/Uno.UI.RuntimeTests/Tests/Windows_UI_Xaml_Media_Imaging/Given_BitmapSource.cs

@@ -298,9 +298,9 @@ public async Task When_Uri_Nullified()
 
 			var initialScreenshot = await UITestHelper.ScreenShot(border);
 
-			bitmapImage.UriSource = new Uri("ms-appx:///Assets/BlueSquare.png");
 			bool opened = false;
 			bitmapImage.ImageOpened += (s, e) => opened = true;
+			bitmapImage.UriSource = new Uri("ms-appx:///Assets/BlueSquare.png");
 
 			await WindowHelper.WaitForIdle();
 			await WindowHelper.WaitFor(() => opened);

src/Uno.UI.RuntimeTests/Tests/Windows_UI_Xaml_Shapes/Given_Android_Relative_Shape_Rounding.cs

@@ -51,18 +51,12 @@ public async Task When_Rectangle_Rounded_Measure_Height()
 			var nativeViewTopBorder = topBorder as Android.Views.View;
 			var nativeViewRect = rect as Android.Views.View;
 			var nativeViewBottomBorder = bottomBorder as Android.Views.View;
+			var nativeGrid = grid as Android.Views.View;
 
-			Assert.AreEqual(146, nativeViewTopBorder.Height);
-			Assert.AreEqual(147, nativeViewRect.Height);
-			Assert.AreEqual(146, nativeViewBottomBorder.Height);
+			Assert.AreEqual(nativeGrid.Height, nativeViewTopBorder.Height + nativeViewRect.Height + nativeViewBottomBorder.Height);
 
-			Assert.AreEqual(146, nativeViewRect.Top);
-			Assert.AreEqual(293, nativeViewRect.Bottom);
-			Assert.AreEqual(293, nativeViewBottomBorder.Top);
-
-			Assert.IsNotNull(rect.FrameRoundingAdjustment);
-			Assert.AreEqual(1, rect.FrameRoundingAdjustment.Value.Height);
-			Assert.AreEqual(0, rect.FrameRoundingAdjustment.Value.Width);
+			Assert.AreEqual(nativeViewRect.Top, nativeViewTopBorder.Bottom);
+			Assert.AreEqual(nativeViewBottomBorder.Top, nativeViewRect.Bottom);
 		}
 	}
 }

src/Uno.UI/Behaviors/VisibleBoundsPadding.cs

@@ -173,7 +173,7 @@ internal VisibleBoundsDetails(FrameworkElement owner)
 
 				_originalPadding = owner.GetPadding();
 
-				_visibleBoundsChanged = (s2, e2) => UpdatePadding();
+				_visibleBoundsChanged = (s2, e2) => Owner?.InvalidateArrange();
 
 #if __IOS__
 				// For iOS, it's required to react on SizeChanged to prevent weird alignment