Text editors

I'm finding Atto changes to adding in divs after returning from a numbered list:

I type this:

Line 1 blah blah blah

Line 2 etc

1. Switch numbering on <enter>
2. Typeing blah blah <enter>
3. Third lin . .  then <enter> twice

<p>I type this:</p><p>Line 1 blah blah blah</p><p>Line 2 etc</p><p><ol><li>Switch numbering on &lt;enter&gt;</li><li>Typeing blah blah &lt;enter&gt;</li><li>Third lin . . &nbsp;then &lt;enter&gt; twice</li></ol><div>Type some more &lt;enter&gt;</div><div>Type still some more</div><div><br></div><div>In HTML it has switched to adding in Divs:</div><div><br></div><div><br></div></p>

I presume this is not the desired behaviour.  But I couldn't find a tracker item.  On the other hand I may have not had a good search term.

-Derek