Avalonia How to fix DataGridHeader style

Describe the bug

Separator of DataGridColumnHeader will clipped by header bound.

Theme

FluentTheme

Screenshots

If applicable, add screenshots to help explain your problem. Screenshot_1

Environment

OS: [ Windows]
Avalonia-Version: [11.0.5 or 11.0.6]

Code

<DataGrid Grid.Row="0" IsReadOnly="True" CornerRadius="3"
					  ItemsSource="{Binding Offers}"
					  GridLinesVisibility="All"
					  AutoGenerateColumns="False"
					  BorderThickness="1"
					  BorderBrush="Gray"
					  HorizontalAlignment="Stretch">
				<DataGrid.Resources>
					<x:Double x:Key="DataGridSortIconMinWidth">0</x:Double>
				</DataGrid.Resources>
				<DataGrid.Columns>
					<DataGridTextColumn Header="Name" Width="*" Binding="{Binding Name}"/>
					<DataGridTextColumn Header="Link" Width="*" Binding="{Binding Link}"/>
					<DataGridTextColumn Header="Limit" Width="*" Binding="{Binding Limit}"/>
					<DataGridTextColumn Header="Thread" Width="*" Binding="{Binding Thread}"/>
					<DataGridTextColumn Header="Delay" Width="*" Binding="{Binding Delay}"/>
					<DataGridTextColumn Header="User Agent" Width="*" Binding="{Binding UserAgent}"/>
					<DataGridTextColumn Header="Tools" Width="*" Binding="{Binding Tools}"/>
					<DataGridTextColumn Header="Proxy" Width="*" Binding="{Binding Proxy}"/>
					<DataGridTextColumn Header="Language" Width="*" Binding="{Binding Language}"/>
					<DataGridTextColumn Header="Referrer" Width="*" Binding="{Binding Referrer}"/>
					<DataGridTextColumn Header="Auto Start" Width="*" Binding="{Binding TimeAutoStart}"/>
					<DataGridTextColumn Header="Auto Stop" Width="*" Binding="{Binding TimeAutoStop}"/>
					<DataGridCheckBoxColumn Header="Auto Fake" Width="*" Binding="{Binding AutoFake}"/>
					<DataGridTextColumn Header="Network" Width="*" Binding="{Binding Network}"/>
					<DataGridTextColumn Header="Running" Width="*" Binding="{Binding Running}"/>
					<DataGridTextColumn Header="Success" Width="*" Binding="{Binding Success}"/>
					<DataGridTemplateColumn Header="Start" Width="*">
						<DataGridTemplateColumn.CellTemplate>
							<DataTemplate>
								<Button Content="Start" Margin="2" Background="{Binding BgStart}" Foreground="{Binding FgStart}" Command="{Binding ((vm:MainWindowViewModel)DataContext).StartOfferCommand, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type Window}}}" CommandParameter="{Binding}" HorizontalAlignment="Stretch" HorizontalContentAlignment="Center"></Button>
							</DataTemplate>
						</DataGridTemplateColumn.CellTemplate>
					</DataGridTemplateColumn>
					<DataGridTemplateColumn Header="Stop" Width="*" >
						<DataGridTemplateColumn.CellTemplate>
							<DataTemplate>
								<Button Content="Stop" Margin="2" Background="{Binding BgStop}" Foreground="{Binding FgStop}" Command="{Binding ((vm:MainWindowViewModel)DataContext).StopOfferCommand, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type Window}}}" CommandParameter="{Binding}" HorizontalAlignment="Stretch" HorizontalContentAlignment="Center"></Button>
							</DataTemplate>
						</DataGridTemplateColumn.CellTemplate>
					</DataGridTemplateColumn>
					<DataGridTemplateColumn Header="Edit" Width="*" >
						<DataGridTemplateColumn.CellTemplate>
							<DataTemplate x:DataType="vm:MainWindowViewModel">
								<Button Content="Edit" Margin="2" Command="{Binding ((vm:MainWindowViewModel)DataContext).EditOfferCommand, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type Window}}}" CommandParameter="{Binding}" HorizontalAlignment="Stretch" HorizontalContentAlignment="Center"></Button>
							</DataTemplate>
						</DataGridTemplateColumn.CellTemplate>
					</DataGridTemplateColumn>
					<DataGridTemplateColumn Header="Delete" Width="*" >
						<DataGridTemplateColumn.CellTemplate>
							<DataTemplate x:DataType="vm:MainWindowViewModel">
								<Button Content="Delete" Margin="2" Command="{Binding ((vm:MainWindowViewModel)DataContext).DeleteOfferCommand, RelativeSource={RelativeSource FindAncestor, AncestorType={x:Type Window}}}" CommandParameter="{Binding}" HorizontalAlignment="Stretch" HorizontalContentAlignment="Center"></Button>
							</DataTemplate>
						</DataGridTemplateColumn.CellTemplate>
					</DataGridTemplateColumn>
				</DataGrid.Columns>
</DataGrid>