Nested Drag Source + Touch

[BButner]

Describe the bug I have a <ListView> as a Drop Target. Inside of the list view collection, I have a specific <Thumb> that is used as the Drag Source. When using the mouse it works perfectly. However, when using touch, it ends up scrolling the Scroll View, instead of grabbing the Drag Source.

To Reproduce Steps to reproduce the behavior:

1. Create a <ListView> as a Drop Target
2. Create a ListViewItem Template that contains the Drag Source
3. Attempt to use a Touch Screen to grab the Drag Source
4. See that it starts to scroll, instead of dragging

Expected behavior It should grab the Drag Source

Desktop (please complete the following information):

• OS: Windows 10

[BButner]

I'm able to somewhat work around this and accomplish what I want with:

private void UIElement_OnTouchDown( object sender, TouchEventArgs e )
{
    if( sender is not Thumb thumb ) return;

    DragDrop.DefaultDragHandler.StartDrag( new DragInfo( thumb, e )
    {
        Effects = DragDropEffects.Move, Data = thumb.DataContext
    } );

    e.Handled = true;
}

[IceDiam0nd]

I got the same issue, is there something new for this bug?

best regards, Ivan

[IceDiam0nd]

I attached my test project, please try it with touch screen.

DragDropTest.zip