Unwanted changes after update

So after updating this theme to version 1.6.3, there was an unwanted change to the layout of my posts. It’s a very minor thing, but it’s visually annoying.

I don’t even know what this area is called, but right under the headline where there’s the date and author, there is now the title of the post as well as the date and time it was created. I do not want this to be there but I can’t find a way to remove it?

This area looks fine on the main page/archive:
<img src=”https://imgur.com/i4Nk67e”&gt;

But when you click on an individual post, it looks like this:
<img src=”https://imgur.com/IGCyBiw”&gt;

How can I remove the clutter and get it to look how it originally did, like it does in the archive?

Any help is appreciated!