Moving widgets sends them to the bottom of the widget hierarchy in the designer tab

1. Open the editor
2. Create a new widget blue print
3. Open the widget blueprint
4. Add a canvas panel (to the default canvas panel)
5. Add a horizontal box (to the default canvas panel)
6. Had an image (to the default canvas panel)
7. Move the widgets around in the designer tab

Result: The widgets after they are moved and the mouse button is released will go to the bottom of the widget hierarchy
Expected: The widgets would not change places in the widget hierarchy as a result of being moved around