diff --git a/build/Version.props b/build/Version.props
index dee77a29e..eae303079 100644
--- a/build/Version.props
+++ b/build/Version.props
@@ -2,7 +2,7 @@
     <PropertyGroup>
         <NoWarn>$(NoWarn);CS7035</NoWarn>
         <AvaloniaVersion>11.3.9</AvaloniaVersion>
-        <AtomUIVersion>5.1.3-build.2</AtomUIVersion>
-        <AtomUIGalleryVersion>5.1.3-build.2</AtomUIGalleryVersion>
+        <AtomUIVersion>5.1.3-build.3</AtomUIVersion>
+        <AtomUIGalleryVersion>5.1.3-build.3</AtomUIGalleryVersion>
     </PropertyGroup>
 </Project>
\ No newline at end of file
diff --git a/src/AtomUI.Desktop.Controls/ImagePreviewer/ImagePreviewerDialog.cs b/src/AtomUI.Desktop.Controls/ImagePreviewer/ImagePreviewerDialog.cs
index 1cb0a256d..e899daff0 100644
--- a/src/AtomUI.Desktop.Controls/ImagePreviewer/ImagePreviewerDialog.cs
+++ b/src/AtomUI.Desktop.Controls/ImagePreviewer/ImagePreviewerDialog.cs
@@ -542,12 +542,11 @@ internal class ImagePreviewerDialog : Window,
             const double ratio  = 0.70d;
             var height = ClientAreaScreenGeometry.Height * ratio;
             var width  = ClientAreaScreenGeometry.Width * ratio;
-            Width                = width;
-            Height               = height;
+            ClientSize = new Size(width, height);
             _firstSizeCalculated = true;
             return new Size(width, height);
         }
-        return new Size(Width, Height);
+        return ClientSize;
     }
     
     private void HandleHorizontalFlipRequest()
diff --git a/src/AtomUI.Desktop.Controls/ImagePreviewer/Themes/ImagePreviewerDialogTheme.axaml b/src/AtomUI.Desktop.Controls/ImagePreviewer/Themes/ImagePreviewerDialogTheme.axaml
index a472a45f0..58fec488e 100644
--- a/src/AtomUI.Desktop.Controls/ImagePreviewer/Themes/ImagePreviewerDialogTheme.axaml
+++ b/src/AtomUI.Desktop.Controls/ImagePreviewer/Themes/ImagePreviewerDialogTheme.axaml
@@ -2,7 +2,10 @@
     xmlns="https://github.com/avaloniaui"
     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
     xmlns:atom="https://atomui.net"
+    xmlns:converters="clr-namespace:Avalonia.Controls.Converters;assembly=Avalonia.Controls"
     x:ClassModifier="internal">
+    <converters:CornerRadiusFilterConverter x:Key="CornerRadiusFilterConverter"
+                                            Filter="BottomLeft, BottomRight"/>
     <ControlTheme x:Key="{x:Type atom:ImagePreviewerDialog}" TargetType="atom:ImagePreviewerDialog">
         <ControlTheme.BasedOn>
             <atom:WindowTheme TargetType="atom:ImagePreviewerDialog" />
@@ -42,7 +45,7 @@
                                     </Border>
 
                                     <Border Name="ContentFrame"
-                                            CornerRadius="{TemplateBinding CornerRadius}"
+                                            CornerRadius="{TemplateBinding CornerRadius, Converter={StaticResource CornerRadiusFilterConverter}}"
                                             ClipToBounds="True"
                                             Cursor="Arrow"
                                             Background="{TemplateBinding ContentBackground}"
diff --git a/src/AtomUI.Desktop.Controls/TabControl/CardTabControl.cs b/src/AtomUI.Desktop.Controls/TabControl/CardTabControl.cs
index f55d9dc16..d88d93a7e 100644
--- a/src/AtomUI.Desktop.Controls/TabControl/CardTabControl.cs
+++ b/src/AtomUI.Desktop.Controls/TabControl/CardTabControl.cs
@@ -97,9 +97,8 @@ public class CardTabControl : BaseTabControl
             tabItem.Shape = TabSharp.Card;
             Debug.Assert(ItemsBindingDisposables.ContainsKey(tabItem));
             var disposables = ItemsBindingDisposables[tabItem];
-            disposables.Add(BindUtils.RelayBind(this, EffectiveCardBorderRadiusProperty, tabItem, TabItem.CornerRadiusProperty));
-            // Use template-level priority so selected-state styles can override border thickness
-            disposables.Add(BindUtils.RelayBind(this, CardBorderThicknessProperty, tabItem, TabItem.BorderThicknessProperty, BindingMode.Default, BindingPriority.Template));
+            disposables.Add(BindUtils.RelayBind(this, EffectiveCardBorderRadiusProperty, tabItem, CornerRadiusProperty));
+            disposables.Add(BindUtils.RelayBind(this, CardBorderThicknessProperty, tabItem, BorderThicknessProperty));
         }
     }
 
diff --git a/src/AtomUI.Desktop.Controls/TabControl/Themes/CardTabItemTheme.axaml b/src/AtomUI.Desktop.Controls/TabControl/Themes/CardTabItemTheme.axaml
index ae9fe3807..dbeb0b92c 100644
--- a/src/AtomUI.Desktop.Controls/TabControl/Themes/CardTabItemTheme.axaml
+++ b/src/AtomUI.Desktop.Controls/TabControl/Themes/CardTabItemTheme.axaml
@@ -10,51 +10,39 @@
         </ControlTheme.BasedOn>
         <Setter Property="Template">
             <ControlTemplate>
-                <Border Name="Frame"
-                        BorderThickness="{TemplateBinding BorderThickness}"
-                        CornerRadius="{TemplateBinding CornerRadius}"
-                        Margin="{TemplateBinding Margin}"
-                        Background="{TemplateBinding Background}"
-                        BorderBrush="{TemplateBinding BorderBrush}"
-                        Padding="{TemplateBinding Padding}">
-                    <StackPanel Orientation="Horizontal">
-                        <atom:IconPresenter Name="ItemIconPresenter"
-                                             Icon="{TemplateBinding Icon}"
-                                             IsVisible="{TemplateBinding Icon, Converter={x:Static ObjectConverters.IsNotNull}}" />
-                        <ContentPresenter Name="ContentPresenter"
-                                          Content="{TemplateBinding Header}"
-                                          ContentTemplate="{TemplateBinding HeaderTemplate, Converter={x:Static atom:BaseTabItemTheme.StringToTextBlockConverter}}" />
-                        <atom:IconButton Name="{x:Static atom:TabItemThemeConstants.ItemCloseButtonPart}"
-                                         Icon="{TemplateBinding CloseIcon}"
-                                         Opacity="{TemplateBinding CloseButtonOpacity}"
-                                         VerticalAlignment="Center" />
-                    </StackPanel>
-                </Border>
+                <Panel>
+                    <Border Name="Frame"
+                            BorderThickness="{TemplateBinding BorderThickness}"
+                            CornerRadius="{TemplateBinding CornerRadius}"
+                            Margin="{TemplateBinding Margin}"
+                            Background="{TemplateBinding Background}"
+                            BorderBrush="{TemplateBinding BorderBrush}"
+                            Padding="{TemplateBinding Padding}">
+                        <StackPanel Orientation="Horizontal">
+                            <atom:IconPresenter Name="ItemIconPresenter"
+                                                Icon="{TemplateBinding Icon}"
+                                                IsVisible="{TemplateBinding Icon, Converter={x:Static ObjectConverters.IsNotNull}}" />
+                            <ContentPresenter Name="ContentPresenter"
+                                              Content="{TemplateBinding Header}"
+                                              ContentTemplate="{TemplateBinding HeaderTemplate, Converter={x:Static atom:BaseTabItemTheme.StringToTextBlockConverter}}" />
+                            <atom:IconButton Name="{x:Static atom:TabItemThemeConstants.ItemCloseButtonPart}"
+                                             Icon="{TemplateBinding CloseIcon}"
+                                             Opacity="{TemplateBinding CloseButtonOpacity}"
+                                             VerticalAlignment="Center" />
+                        </StackPanel>
+                    </Border>
+                    <Rectangle Height="1" Fill="Red" VerticalAlignment="Bottom" Margin="1, 0, 1, 0"/>
+                </Panel>
             </ControlTemplate>
         </Setter>
 
         <Setter Property="Margin" Value="{DynamicResource {x:Static atom:TabControlTokenKey.HorizontalItemMargin}}" />
         <Setter Property="Background" Value="{DynamicResource {x:Static atom:TabControlTokenKey.CardBg}}" />
         <Setter Property="BorderBrush" Value="{DynamicResource {x:Static atom:SharedTokenKey.ColorBorderSecondary}}" />
-        <Setter Property="BorderThickness" Value="{DynamicResource {x:Static atom:SharedTokenKey.BorderThickness}}" />
 
         <Style Selector="^:selected">
             <Setter Property="Background" Value="{DynamicResource {x:Static atom:SharedTokenKey.ColorBgContainer}}" />
         </Style>
-        <!-- 选中态按放置方向去掉靠内容侧的边框 -->
-        <Style Selector="^[TabStripPlacement=Top]:selected">
-            <Setter Property="BorderThickness" Value="1,1,1,0" />
-        </Style>
-        <Style Selector="^[TabStripPlacement=Bottom]:selected">
-            <Setter Property="BorderThickness" Value="1,0,1,1" />
-        </Style>
-        <Style Selector="^[TabStripPlacement=Left]:selected">
-            <Setter Property="BorderThickness" Value="1,1,0,1" />
-        </Style>
-        <Style Selector="^[TabStripPlacement=Right]:selected">
-            <Setter Property="BorderThickness" Value="0,1,1,1" />
-        </Style>
-
 
         <Style Selector="^[TabStripPlacement=Top], ^[TabStripPlacement=Bottom]">
             <Setter Property="Margin" Value="{DynamicResource {x:Static atom:TabControlTokenKey.HorizontalItemMargin}}" />
diff --git a/src/AtomUI.Desktop.Controls/Window/Themes/WindowTheme.axaml b/src/AtomUI.Desktop.Controls/Window/Themes/WindowTheme.axaml
index 1282d2857..2cbade3cd 100644
--- a/src/AtomUI.Desktop.Controls/Window/Themes/WindowTheme.axaml
+++ b/src/AtomUI.Desktop.Controls/Window/Themes/WindowTheme.axaml
@@ -28,7 +28,7 @@
 
                                 <Border Name="ContentFrame"
                                         Background="{TemplateBinding ContentBackground}"
-                                        CornerRadius="{TemplateBinding CornerRadius}"
+                                        CornerRadius="{TemplateBinding CornerRadius, Converter={x:Static atom:WindowTheme.CornerRadiusConverter}}"
                                         ClipToBounds="True"
                                         Cursor="Arrow"
                                         Container.Name="{x:Static atom:IMediaBreakAwareControl.GlobalQueryContainerName}"
diff --git a/src/AtomUI.Desktop.Controls/Window/Themes/WindowTheme.cs b/src/AtomUI.Desktop.Controls/Window/Themes/WindowTheme.cs
index bf1c7546e..6b4590abc 100644
--- a/src/AtomUI.Desktop.Controls/Window/Themes/WindowTheme.cs
+++ b/src/AtomUI.Desktop.Controls/Window/Themes/WindowTheme.cs
@@ -1,7 +1,12 @@
+using Avalonia.Controls.Converters;
 using Avalonia.Styling;
 
 namespace AtomUI.Desktop.Controls.Themes;
 
 internal class WindowTheme : ControlTheme
 {
+    public static readonly CornerRadiusFilterConverter  CornerRadiusConverter = new CornerRadiusFilterConverter()
+    {
+        Filter = Corners.BottomLeft | Corners.BottomRight,
+    }; 
 }
\ No newline at end of file