When creating a grand child widget it appears that the preconstuct does not behave as expected. The child widget fails to render widgets that belong to its parent's parent.
Result: The Grand child widget does not show the text that was present in both its parent and it's parent's parent
Expected: The widget would display text stating "I am the grand child?" As is similarly seen in the widgets further up the chain of inheritance
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-70855 in the post.