Binding TabControl Header with DisplayMemberPath does not work

[NeilMacMullen]

Bug explanation

When using this style of code...

<TabControl ItemsSource="{Binding Items}"
                  SelectedItem="{Binding ActiveItem}"
                  DisplayMemberPath="Name">

The tab header is displayed as the Name (or possibly ToString) of the bound model item.

The workaround is to specify the Header template....

 <TabControl ItemsSource="{Binding Items}"
                  SelectedItem="{Binding ActiveItem}"
                >
        <TabControl.ItemTemplate>
          <DataTemplate >
            <Viewbox
              Height="Auto">
              <TextBlock Text="{Binding Name}"/>
            </Viewbox>
          </DataTemplate>
        </TabControl.ItemTemplate> 

Version

4.5.0

[NeilMacMullen]

Upon further investigation it seems that setting the itemTemplate in this way messes up the ContentTemplate in some way. Sometimes the content is not displayed at all sometimes it is initially displayed but not redisplayed when returning to the control. For now, the best workaround I've found is to disable the Material styling by setting the style to null...

  <TabControl ItemsSource="{Binding Items}"
                  SelectedItem="{Binding ActiveItem}"
                  Style="{x:Null}">
        <TabControl.ItemTemplate>
          <DataTemplate>
            <Label Content="{Binding Name}"/>
          </DataTemplate>
        </TabControl.ItemTemplate>
        <TabControl.ContentTemplate>
          <DataTemplate>
            <ContentControl s:View.Model="{Binding}"
                              IsTabStop="False"/>
          </DataTemplate>
        </TabControl.ContentTemplate>
      </TabControl>