CatA-Replies-Replies. These have root -> CatA.
Update: The below have been fixed, but the above are still a problem!
These appear to be threads that were SoPWified, but the root field of the deeper replies still points to the original Q&A Category.
These were found by bad root_nodes.
A foolish day
Just another day
Internet cleaning day
The real first day of Spring
The real first day of Autumn
Wait a second, ... is this poll a joke?
Results (485 votes),