diff --git a/src/Avalonia.Controls.DataGrid/Themes/Fluent.xaml b/src/Avalonia.Controls.DataGrid/Themes/Fluent.xaml
index 082eac60be..0cc620dae9 100644
--- a/src/Avalonia.Controls.DataGrid/Themes/Fluent.xaml
+++ b/src/Avalonia.Controls.DataGrid/Themes/Fluent.xaml
@@ -42,9 +42,10 @@
 
         </ResourceDictionary>
     </ResourceDictionary.ThemeDictionaries>
-    
+
     <x:Double x:Key="ListAccentLowOpacity">0.6</x:Double>
     <x:Double x:Key="ListAccentMediumOpacity">0.8</x:Double>
+    <x:Double x:Key="DataGridSortIconMinWidth">32</x:Double>
 
     <StreamGeometry x:Key="DataGridSortIconDescendingPath">M1875 1011l-787 787v-1798h-128v1798l-787 -787l-90 90l941 941l941 -941z</StreamGeometry>
     <StreamGeometry x:Key="DataGridSortIconAscendingPath">M1965 947l-941 -941l-941 941l90 90l787 -787v1798h128v-1798l787 787z</StreamGeometry>
@@ -174,7 +175,7 @@
                     VerticalAlignment="{TemplateBinding VerticalContentAlignment}">
                 <Grid.ColumnDefinitions>
                   <ColumnDefinition Width="*" />
-                  <ColumnDefinition Width="Auto" MinWidth="32" />
+                  <ColumnDefinition Width="Auto" MinWidth="{DynamicResource DataGridSortIconMinWidth}" />
                 </Grid.ColumnDefinitions>
 
                 <ContentPresenter Content="{TemplateBinding Content}"
@@ -512,7 +513,7 @@
                   BorderBrush="{TemplateBinding BorderBrush}"
                   BorderThickness="{TemplateBinding BorderThickness}"
                   CornerRadius="{TemplateBinding CornerRadius}">
-            <Grid ColumnDefinitions="Auto,*,Auto" 
+            <Grid ColumnDefinitions="Auto,*,Auto"
                   RowDefinitions="Auto,*,Auto,Auto"
                   ClipToBounds="True">
               <DataGridColumnHeader Name="PART_TopLeftCornerHeader"
diff --git a/src/Avalonia.Controls/Presenters/ScrollContentPresenter.cs b/src/Avalonia.Controls/Presenters/ScrollContentPresenter.cs
index bd694b200c..bd3d2b5171 100644
--- a/src/Avalonia.Controls/Presenters/ScrollContentPresenter.cs
+++ b/src/Avalonia.Controls/Presenters/ScrollContentPresenter.cs
@@ -7,7 +7,7 @@ using Avalonia.Input.GestureRecognizers;
 using Avalonia.Utilities;
 using Avalonia.VisualTree;
 using System.Linq;
-using Avalonia.Interactivity;
+using Avalonia.Layout;
 
 namespace Avalonia.Controls.Presenters
 {
@@ -473,7 +473,15 @@ namespace Avalonia.Controls.Presenters
             }
 
             Viewport = finalSize;
-            Extent = Child!.Bounds.Size.Inflate(Child.Margin);
+
+            var childMargin = Child!.Margin;
+            if (Child.UseLayoutRounding)
+            {
+                var scale = LayoutHelper.GetLayoutScale(Child);
+                childMargin = LayoutHelper.RoundLayoutThickness(childMargin, scale, scale);
+            }
+
+            Extent = Child!.Bounds.Size.Inflate(childMargin);
             _isAnchorElementDirty = true;
 
             return finalSize;
diff --git a/src/Avalonia.X11/X11Clipboard.cs b/src/Avalonia.X11/X11Clipboard.cs
index 04d1aae194..6e18151fae 100644
--- a/src/Avalonia.X11/X11Clipboard.cs
+++ b/src/Avalonia.X11/X11Clipboard.cs
@@ -224,7 +224,7 @@ namespace Avalonia.X11
 
         private Task<object> SendDataRequest(IntPtr format)
         {
-            if (_requestedDataTcs == null || _requestedFormatsTcs.Task.IsCompleted)
+            if (_requestedDataTcs == null || _requestedDataTcs.Task.IsCompleted)
                 _requestedDataTcs = new TaskCompletionSource<object>();
             XConvertSelection(_x11.Display, _x11.Atoms.CLIPBOARD, format, format, _handle, IntPtr.Zero);
             return _requestedDataTcs.Task;
diff --git a/tests/Avalonia.Controls.UnitTests/Presenters/ScrollContentPresenterTests.cs b/tests/Avalonia.Controls.UnitTests/Presenters/ScrollContentPresenterTests.cs
index f6130d49d6..c7ea5c1b69 100644
--- a/tests/Avalonia.Controls.UnitTests/Presenters/ScrollContentPresenterTests.cs
+++ b/tests/Avalonia.Controls.UnitTests/Presenters/ScrollContentPresenterTests.cs
@@ -4,6 +4,7 @@ using System.Reactive.Linq;
 using Avalonia.Controls.Presenters;
 using Avalonia.Controls.Primitives;
 using Avalonia.Layout;
+using Avalonia.UnitTests;
 using Xunit;
 
 namespace Avalonia.Controls.UnitTests.Presenters
@@ -244,6 +245,36 @@ namespace Avalonia.Controls.UnitTests.Presenters
             Assert.Equal(new Size(110, 110), target.Extent);
         }
 
+        [Fact]
+        public void Extent_Should_Include_Content_Margin_Scaled_With_Layout_Rounding()
+        {
+            var root = new TestRoot
+            {
+                LayoutScaling = 1.25,
+                UseLayoutRounding = true
+            };
+
+            var target = new ScrollContentPresenter
+            {
+                HorizontalAlignment = HorizontalAlignment.Center,
+                VerticalAlignment = VerticalAlignment.Center,
+                Content = new Border
+                {
+                    Width = 200,
+                    Height = 200,
+                    Margin = new Thickness(2)
+                }
+            };
+
+            root.Child = target;
+            target.UpdateChild();
+            target.Measure(new Size(1000, 1000));
+            target.Arrange(new Rect(0, 0, 1000, 1000));
+
+            Assert.Equal(new Size(203.2, 203.2), target.Viewport);
+            Assert.Equal(new Size(203.2, 203.2), target.Extent);
+        }
+
         [Fact]
         public void Extent_Width_Should_Be_Arrange_Width_When_CanScrollHorizontally_False()
         {