WPF Styling problem

template.xaml

<HierarchicalDataTemplate x:Key="TreeViewRunNodeDataTemplate" ItemsSource="{Binding Jobs}">
    <StackPanel Orientation="Horizontal" HorizontalAlignment="Left">
        <TextBlock VerticalAlignment="Center" FontFamily="{StaticResource CodiconFont}" 
           Foreground="{Binding Path=Conclusion, Converter={StaticResource ConclusionColorConverter}}"
           Text="{Binding Path=Conclusion, Converter={StaticResource ConclusionIconConverter}}"/>
        <emoji:TextBlock Text="{Binding DisplayName}" VerticalAlignment="Bottom" Tag="{Binding Url}"/>
    </StackPanel>
</HierarchicalDataTemplate>

view.xaml

<TreeView BorderThickness="0" FontWeight="Normal" PreviewMouseWheel="HandlePreviewMouseWheel" x:Name="tvCurrentBranch" ItemTemplate="{StaticResource TreeViewRunNodeDataTemplate}" HorizontalAlignment="Stretch" HorizontalContentAlignment="Stretch">
    <TreeView.Resources>
        <Style TargetType="{x:Type TreeViewItem}" BasedOn="{StaticResource {x:Type TreeViewItem}}">
            <EventSetter Event="MouseDoubleClick" Handler="JobItem_MouseDoubleClick"/>
        </Style>
    </TreeView.Resources>
</TreeView>