修复部分UI错误

src/ST.Client.Desktop.Avalonia/Application/UI/Styles/Controls/TabControl.xaml

@@ -97,7 +97,4 @@
         <Setter Property="Background" Value="#3fffffff" />
     </Style>
 
-    <Style Selector="ui|CommandBar:labelbottom /template/ Popup#OverflowPopup">
-        <Setter Property="VerticalOffset" Value="16" />
-    </Style>
 </Styles>

src/ST.Client.Desktop.Avalonia/Application/UI/Views/Pages/CommunityProxyPage.axaml

@@ -131,7 +131,7 @@
               </ui:CommandBarButton.Icon>
             </ui:CommandBarButton>
             <ui:CommandBarSeparator/>
-            
+
             <ui:CommandBarButton
          Command="{Binding EditHostsFileCommand}"
          Label="{ReflectionBinding Path=Res.CommunityFix_EditHostsFile,Mode=OneWay,Source={x:Static resx:R.Current}}">
@@ -153,7 +153,7 @@
                 <ui:PathIcon Data="{StaticResource DocumentEditDrawing}"/>
               </ui:CommandBarButton.Icon>
             </ui:CommandBarButton>
-          
+
           </ui:CommandBar.SecondaryCommands>
         </ui:CommandBar>
       </Border>
@@ -170,11 +170,11 @@
                  ClipToBounds="True"
                  Items="{ReflectionBinding Source={x:Static service:ProxyService.Current},Path=ProxyDomainsList,Mode=OneWay}"
                  SelectedItem="{ReflectionBinding Source={x:Static service:ProxyService.Current},Path=SelectGroup,Mode=TwoWay}"
+                 VirtualizationMode="None"
+                 AutoScrollToSelectedItem="True"
                  Background="Transparent">
           <ListBox.ItemTemplate>
             <DataTemplate>
-              <!--<Border Classes="paper" Background="{DynamicResource ThemeBrushKey}">-->
-              <!--<StackPanel>-->
               <StackPanel Orientation="Horizontal"
                          Margin="20 15">
                 <CheckBox Classes="onlyCheckBox"
@@ -192,9 +192,6 @@
                                              Margin="20 0 0 0">
                 </controls:ScrollingTextBlock>
               </StackPanel>
-              <!--<Separator Classes="Separator"  />-->
-              <!--</StackPanel>-->
-              <!--</Border>-->
             </DataTemplate>
           </ListBox.ItemTemplate>
         </ListBox>

src/ST.Client/Settings/ProxySettings.cs

@@ -63,7 +63,7 @@ namespace System.Application.Settings
         /// 代理时使用的解析主DNS
         /// </summary>
         public static SerializableProperty<string?> ProxyMasterDns { get; }
-            = GetProperty<string?>(defaultValue: IDnsAnalysisService.PrimaryDNS_Ali, autoSave: false);
+            = GetProperty<string?>(defaultValue: "System Default", autoSave: false);
         #endregion
 
         #region 本地代理设置