Title and summary are part of the metadata of a web content. A common usage is to populate any of them as content to the final user but they are not real content as such.
A web content is always shaped by a structure, that is the place where to really place the content for the web content. It is a bit difficult to understand in the current interface the difference between what comes from the structure and what doesn't.
To make this difference a bit more clear we propose to separate both areas and be a bit more explicit with the intention to provide content creators with a better understanding of the web content.