Hi team

I've a serious problem with XamDataTree (v 11.1).

Basically I have 2 tree controls, very simple, that host same node type.

Tree 1:

 <ig:XamDataTree
                x:Name="HierarchyNodesTree"
                ItemsSource="{Binding HierarchyNodes}"
                DisplayMemberPath="Value"
                NodeLineVisibility="Visible"
                IsDraggable="True"
                IsDropTarget="True"
                Style="{StaticResource ResourceKey=HierarchyTree}">
                <ig:XamDataTree.GlobalNodeLayouts>
                    <ig:NodeLayout Key="Node" TargetTypeName="HierarchyNode" DisplayMemberPath="Value" ></ig:NodeLayout>
                </ig:XamDataTree.GlobalNodeLayouts>
            </ig:XamDataTree>

Tree 2:

 <ig:XamDataTree
                x:Name="UnassignedNodesTree"
                ItemsSource="{Binding UnassignedNodes}"
                DisplayMemberPath="Value"
                IsDraggable="True"
                Style="{StaticResource ResourceKey=HierarchyTree}">
                <ig:XamDataTree.GlobalNodeLayouts>
                    <ig:NodeLayout Key="Node" TargetTypeName="HierarchyNode" DisplayMemberPath="Value"></ig:NodeLayout>
                </ig:XamDataTree.GlobalNodeLayouts>
            </ig:XamDataTree>

The idea is to drag the items from Tree2 and drop to Tree1.

The problem is that sometimes (and it's not rare case!) the drapped item vanishes (completely disappears from Tree2, and is not added to Tree1).

This is happening when I drag root item to the deep node (deep level >2).

Appreciate any feedback