I think you have to remove to local style for your margin
<StackPanel Name="stackTextPanel" Orientation="Horizontal">
<StackPanel.Style>
<Style TargetType="{x:Type StackPanel}">
<Setter Property="Margin" Value="0,8,0,0" />
<Style.Triggers>
<DataTrigger Binding="{Binding QuickDrawBarPinned}" Value="False">
<Setter Property="Margin" Value="0,8,0,0" />
</DataTrigger>
<DataTrigger Binding="{Binding QuickDrawBarPinned}" Value="True">
<Setter Property="Margin" Value="0,48,0,0" />
</DataTrigger>
</Style.Triggers>
</Style>
</StackPanel.Style>