Fix the issue that the size of AcrylicWindow is affected by the window title string(#106)

Author: sourcechord

FluentWPF/Styles/Window.xaml

@@ -217,7 +217,8 @@
                                   Grid.Row="0" Grid.RowSpan="2"/>
                 <ResizeGrip x:Name="resizeGrip" Grid.Row="1"
                             HorizontalAlignment="Right" IsTabStop="False" VerticalAlignment="Bottom" Visibility="Collapsed"/>
-                <Grid x:Name="captionGrid" TextBlock.Foreground="{DynamicResource SystemBaseHighColorBrush}">
+                <Grid x:Name="captionGrid" TextBlock.Foreground="{DynamicResource SystemBaseHighColorBrush}"
+                      Width="{Binding ActualWidth, ElementName=windowContent}">
                     <Grid.ColumnDefinitions>
                         <ColumnDefinition Width="Auto"/>
                         <ColumnDefinition />