Hi!

I have the same problem width scrolling textblock inside a scrollviewer. Here is my code, and I cannot understand whats wrong! I have replaced real text with Mytext.

  <ScrollViewer Margin="203,8,8,8" HorizontalScrollBarVisibility="Auto" VerticalScrollBarVisibility="Auto">
   <ScrollViewer.BorderBrush>
    <LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
     <GradientStop Color="Black" Offset="0"/>
     <GradientStop Color="Black" Offset="1"/>
     <GradientStop Color="#FF590F0F" Offset="0.003"/>
     <GradientStop Color="#FF591111" Offset="1"/>
    </LinearGradientBrush>
   </ScrollViewer.BorderBrush>
   <TextBlock TextWrapping="Wrap" Width="560"><Run FontSize="21.333" Foreground="#FFAD2323" Text="Mytext"/><LineBreak/><Run FontSize="13.333" Text="Mytext."/><LineBreak/><Run FontSize="13.333" Text=""/><Run FontSize="21.333" Foreground="#FFAD2323" Text="Mytext"/><LineBreak/><Run FontFamily="Verdana" FontSize="21.333" Foreground="#FFAD2323" Text="Mytext."/><LineBreak/><Run FontFamily="Verdana" FontSize="13.333" Text="Mytext."/><LineBreak/><LineBreak/><Run FontSize="21.333" Foreground="#FFAD2323" Text="HP  "/><LineBreak/><Run FontSize="13.333" Text="Mytext."/><LineBreak/><Run FontSize="13.333" Text="Mytext"/><LineBreak/><Run FontSize="13.333" Text="Mytext."/><LineBreak/><LineBreak/><Run FontSize="21.333" Foreground="#FFAD2323" Text="Mytext"/><LineBreak/><Run FontFamily="Verdana" FontSize="13.333" Text="MyText."/><LineBreak/><Run FontSize="21.333" Foreground="#FFAD2323" Text=""/></TextBlock>
  </ScrollViewer>

Best regards
Jimmy