Widgets added via the user created section do not update when changes are made to the child widgets

When updating a widget's settings, those changes will not be reflected in the defaults of any instances where that widget has been used.

1. Download the attached project
2. Open the project
3. Open "ChildWidget"
4. Open "ParentWidget"
5. Click the root of child widget
6. Set Is focusable to false
7. In ParentWidget select "ChildWidget" (that has been added to the designer tab)

Result: The change has not been updated in the "childwidget" instance that resides in "parentwidget"

Expected: The change to "ChildWidget" would be reflected in the designer tab of any other widget that is using "ChildWidget" as long as the default has not been changed