fix: fix popup Padding.

src/Semi.Avalonia/Controls/AutoCompleteBox.axaml

@@ -33,15 +33,13 @@
                             PlacementTarget="{TemplateBinding}">
                             <Border
                                 Margin="{DynamicResource AutoCompleteBoxPopupMargin}"
+                                Padding="{DynamicResource AutoCompleteBoxPopupPadding}"
                                 HorizontalAlignment="Stretch"
                                 Background="{DynamicResource AutoCompleteBoxPopupBackground}"
                                 BorderBrush="{DynamicResource AutoCompleteBoxPopupBorderBrush}"
                                 BorderThickness="{DynamicResource AutoCompleteBoxPopupBorderThickness}"
                                 BoxShadow="{DynamicResource AutoCompleteBoxPopupBoxShadow}"
                                 CornerRadius="{DynamicResource AutoCompleteBoxPopupCornerRadius}">
-                                <Border
-                                    CornerRadius="{DynamicResource AutoCompleteBoxPopupCornerRadius}"
-                                    ClipToBounds="True">
                                 <ListBox
                                     Name="PART_SelectingItemsControl"
                                     Foreground="{TemplateBinding Foreground}"
@@ -49,7 +47,6 @@
                                     ScrollViewer.HorizontalScrollBarVisibility="Auto"
                                     ScrollViewer.VerticalScrollBarVisibility="Auto" />
                             </Border>
-                            </Border>
                         </Popup>
                     </Panel>
                 </DataValidationErrors>
@@ -75,15 +72,13 @@
                             PlacementTarget="{TemplateBinding}">
                             <Border
                                 Margin="{DynamicResource AutoCompleteBoxPopupMargin}"
+                                Padding="{DynamicResource AutoCompleteBoxPopupPadding}"
                                 HorizontalAlignment="Stretch"
                                 Background="{DynamicResource AutoCompleteBoxPopupBackground}"
                                 BorderBrush="{DynamicResource AutoCompleteBoxPopupBorderBrush}"
                                 BorderThickness="{DynamicResource AutoCompleteBoxPopupBorderThickness}"
                                 BoxShadow="{DynamicResource AutoCompleteBoxPopupBoxShadow}"
                                 CornerRadius="{DynamicResource AutoCompleteBoxPopupCornerRadius}">
-                                <Border
-                                    CornerRadius="{DynamicResource AutoCompleteBoxPopupCornerRadius}"
-                                    ClipToBounds="True">
                                     <ListBox
                                         Name="PART_SelectingItemsControl"
                                         Foreground="{TemplateBinding Foreground}"
@@ -91,7 +86,6 @@
                                         ScrollViewer.HorizontalScrollBarVisibility="Auto"
                                         ScrollViewer.VerticalScrollBarVisibility="Auto" />
                             </Border>
-                            </Border>
                         </Popup>
                     </Panel>
                 </ControlTemplate>

src/Semi.Avalonia/Controls/ComboBox.axaml

@@ -102,7 +102,6 @@
                             Grid.Column="0"
                             MinWidth="{Binding Bounds.Width, RelativeSource={RelativeSource TemplatedParent}}"
                             MaxHeight="{TemplateBinding MaxDropDownHeight}"
-                            ClipToBounds="False"
                             InheritsTransform="True"
                             IsLightDismissEnabled="True"
                             IsOpen="{TemplateBinding IsDropDownOpen, Mode=TwoWay}"
@@ -112,14 +111,12 @@
                                 Name="PopupBorder"
                                 HorizontalAlignment="Stretch"
                                 Margin="{DynamicResource ComboBoxPopupBorderMargin}"
+                                Padding="{DynamicResource ComboBoxPopupBorderPadding}"
                                 Background="{DynamicResource ComboBoxPopupBackground}"
                                 BorderBrush="{DynamicResource ComboBoxPopupBorderBrush}"
                                 BorderThickness="{DynamicResource ComboBoxPopupBorderThickness}"
                                 BoxShadow="{DynamicResource ComboBoxPopupBoxShadow}"
                                 CornerRadius="{DynamicResource ComboBoxPopupBoxCornerRadius}">
-                                <Border
-                                    CornerRadius="{DynamicResource ComboBoxPopupBoxCornerRadius}"
-                                    ClipToBounds="True">
                                 <ScrollViewer
                                     HorizontalScrollBarVisibility="{TemplateBinding ScrollViewer.HorizontalScrollBarVisibility}"
                                     IsDeferredScrollingEnabled="{TemplateBinding ScrollViewer.IsDeferredScrollingEnabled}"
@@ -129,7 +126,6 @@
                                         ItemsPanel="{TemplateBinding ItemsPanel}" />
                                 </ScrollViewer>
                             </Border>
-                            </Border>
                         </Popup>
                     </Grid>
                 </DataValidationErrors>

src/Semi.Avalonia/Controls/Menu.axaml

@@ -10,9 +10,6 @@
         <Setter Property="Background" Value="Transparent" />
         <Setter Property="Template">
             <ControlTemplate TargetType="ScrollViewer">
-                <Border 
-                    ClipToBounds="True"
-                    CornerRadius="{TemplateBinding CornerRadius}">
                 <DockPanel>
                     <DockPanel.Styles>
                         <Style Selector="RepeatButton:pressed">
@@ -84,7 +81,6 @@
                         </ScrollContentPresenter.GestureRecognizers>
                     </ScrollContentPresenter>
                 </DockPanel>
-                </Border>
             </ControlTemplate>
         </Setter>
     </ControlTheme>
@@ -113,7 +109,6 @@
     <ControlTheme x:Key="{x:Type MenuItem}" TargetType="MenuItem">
         <Setter Property="Background" Value="{DynamicResource MenuItemBackground}" />
         <Setter Property="Foreground" Value="{DynamicResource MenuItemForeground}" />
-        <Setter Property="CornerRadius" Value="{DynamicResource MenuItemCornerRadius}" />
         <Setter Property="Cursor" Value="Hand" />
         <!--  Narrow padding should be used for mouse input, when non-narrow one should be used for touch input in future.  -->
         <Setter Property="Padding" Value="{DynamicResource MenuItemPadding}" />

src/Semi.Avalonia/Themes/Shared/AutoCompleteBox.axaml

@@ -1,6 +1,7 @@
 <ResourceDictionary xmlns="https://github.com/avaloniaui" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
     <Thickness x:Key="AutoCompleteBoxPopupBorderThickness">1</Thickness>
     <Thickness x:Key="AutoCompleteBoxPopupMargin">4</Thickness>
+    <Thickness x:Key="AutoCompleteBoxPopupPadding">0 4</Thickness>
     <CornerRadius x:Key="AutoCompleteBoxPopupCornerRadius">6</CornerRadius>
     <x:Double x:Key="AutoCompleteBoxDefaultHeight">32</x:Double>
     <x:Double x:Key="AutoCompleteBoxSmallHeight">24</x:Double>

src/Semi.Avalonia/Themes/Shared/ComboBox.axaml

@@ -14,6 +14,7 @@
         M4.08045 7.59809C4.66624 7.01231 5.61599 7.01231 6.20177 7.59809L11.8586 13.2549L17.5155 7.59809C18.1013 7.01231 19.051 7.01231 19.6368 7.59809C20.2226 8.18388 20.2226 9.13363 19.6368 9.71941L12.9193 16.4369C12.3335 17.0227 11.3838 17.0227 10.798 16.4369L4.08045 9.71941C3.49467 9.13363 3.49467 8.18388 4.08045 7.59809Z
     </StreamGeometry>
     <Thickness x:Key="ComboBoxPopupBorderMargin">4</Thickness>
+    <Thickness x:Key="ComboBoxPopupBorderPadding">0 4</Thickness>
 
     <x:Double x:Key="ComboBoxDefaultHeight">32</x:Double>
     <x:Double x:Key="ComboBoxSmallHeight">24</x:Double>

src/Semi.Avalonia/Themes/Shared/ListBox.axaml

@@ -1,6 +1,6 @@
 <ResourceDictionary xmlns="https://github.com/avaloniaui" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
     <!-- ListBox -->
     <Thickness x:Key="ListBoxItemDefaultPadding">12 8</Thickness>
-    <CornerRadius x:Key="ListBoxItemCornerRadius">3</CornerRadius>
+    <CornerRadius x:Key="ListBoxItemCornerRadius">0</CornerRadius>
 
 </ResourceDictionary>

src/Semi.Avalonia/Themes/Shared/Menu.axaml

@@ -6,7 +6,7 @@
 
     <!--  MenuFlyout  -->
     <Thickness x:Key="MenuFlyoutBorderThickness">1</Thickness>
-    <Thickness x:Key="MenuFlyoutPadding">0</Thickness>
+    <Thickness x:Key="MenuFlyoutPadding">0 4</Thickness>
     <CornerRadius x:Key="MenuFlyoutCornerRadius">6</CornerRadius>
     <x:Double x:Key="MenuFlyoutMinHeight">16</x:Double>
     <x:Double x:Key="MenuFlyoutMinWidth">100</x:Double>