Why are older shows showing up under the Recently Added TV Shows

[Dimity]

I was surprised to see so many new  shows  and when I opened some of them realized that they aren't new at all. I am assuming this is a glitch of some kind?

[CM-BlueButterfly]

A new documentary category was created. To make the documentaries search-able forum wide, the topics were indexed after they were moved. All the shows that aren't new but are showing up as recently added are shows that were recently moved to the new category and indexed.