ScrollBarExtensions.KeepExpanded

[AndrewKeepCoding]

This experiment introduces an attached property that keeps ScrollBars expanded, which auto-collapes when it doesn't have the focus.

<!--  ScrollBar  -->
<ScrollBar toolkit:ScrollBarExtensions.KeepVerticalExpanded="True" />
<!-- ScrollViewer  -->
<ScrollViewer
    toolkit:ScrollBarExtensions.KeepHorizontalExpanded="True"
    toolkit:ScrollBarExtensions.KeepVerticalExpanded="True">
    <ItemsRepeater />
</ScrollViewer>
<!--  ListView  -->
<ListView toolkit:ScrollBarExtensions.KeepVerticalExpanded="True" />
<!--  GridView  -->
<GridView toolkit:ScrollBarExtensions.KeepVerticalExpanded="True" />
<!-- NavigationView  -->
<NavigationView toolkit:ScrollBarExtensions.KeepVerticalExpanded="True" />

It's already available as NuGet package, but I think it could live alongside the CommunityToolkit.ScrollViewerExtensions. Here's the repo.
You can see it in action in this video.