Counting Tickets after Package Returns

In the Ticket & Seat elastic cube, I've found a "problem" or "curiosity" with "Total Ticket Count". If you return a ticket in a package.  "Total Ticket Count" decrements. 

But, Total "Ticket Paid Count" and "Total Ticket Paid/Reserved Count" don't decrement. 

I'm not clear if that is a feature or Bug. 

Has anyone else run into this?

Do you think that it is a feature or a bug?