UWP_ElementNameBinding_Issue

This report demonstrates issue with Binding to ElementName.

Steps to reproduce:

1. Build and run app. You will see list of 10 numbers and "Redraw" button.
2. Click on "Redraw" button. See, that the whole list is updated at once.
3. Go to \Themes\Generic.xaml and fine next code:

<TransitionCollection>
   <!-- THIS BINDING IS NOT WORKING -->
   <EntranceThemeTransition IsStaggeringEnabled="{Binding ElementName=Items, Path=DataContext.IsStaggeringEnabled}"
                            FromVerticalOffset="-20"
                            FromHorizontalOffset="-20" />

   <!--<EntranceThemeTransition IsStaggeringEnabled="True"
                                FromVerticalOffset="-20"
                                FromHorizontalOffset="-20" />-->
</TransitionCollection>

4. Comment the first EntranceThemeTransition and uncomment the second EntranceThemeTransition. Code should look like this:

<TransitionCollection>
   <!-- THIS BINDING IS NOT WORKING -->
   <!--<EntranceThemeTransition IsStaggeringEnabled="{Binding ElementName=Items, Path=DataContext.IsStaggeringEnabled}"
                                FromVerticalOffset="-20"
                                FromHorizontalOffset="-20" />-->

   <EntranceThemeTransition IsStaggeringEnabled="True"
                            FromVerticalOffset="-20"
                            FromHorizontalOffset="-20" />
</TransitionCollection>

5. Click on "Redraw" and see how each item is updated with animation one by one.

Question:

Why binding is not working?

Stackoverflow:

https://stackoverflow.com/questions/60207057/uwp-elementname-binding-doesnt-work-in-entrancethemetransition