Resolved Title Bar?

It does nothing by itself, it is an optional display (block header) for the Category Content. If there is nothing added to the Category content, then the block header won't display.

Here I've added a Category Content Title and some Category Content.



And when you view the category page, the category content is displayed in a container with a block header that is using the category content title.



The block header is optional, so in this next example, I've removed it.



And this is what the Category Content looks like without the Category Content Title (its just a standard block without the block header).