Expandable Area widget appears to create extra widgets when being copied and pasted

Expandable Area widget appears to create extra widgets when being copied and pasted. These widget appear to be ghost widgets of the original children. If the new unwanted button is selected or deleted both new buttons are selected or deleted.

1. Open the editor
2. Create a new widget blueprint
3. Add an Expandable Area widget to the designer tab
4. Add a button to the header
5. Copy and past the (Crtl+C, Ctrl+V) the Expandable Area Widget
6. Notice that when the widget is pasted that a new button is created that is not a child of the Expandable Area widget

Expected: The widget would copy the current widget and provide an exact copy of what was selected
Result: Extra widgets are created when pasting