In the editor, enter a few lines of text
Then create a bulleted list, enter a few lines of text using the bulleted list. Press delete to exit the list.
Now enter a few more lines of text, you will seee that now the content is wrapped with <p> instead of <div>. Here's the markup that I got:
<div>asdfasdf</div>
<div>asdf</div>
<div>asdfasdf</div>
<div>asdf</div>
<ul>
<li>asdfasdfasdf</li>
<li>asdfasdf</li>
</ul>
<p>asdfasf</p>
<p>asdf</p>
<p>asdf</p>
<p> </p>