Hi pw007,
By default, editor will close the tag directly.
1. Please open http://www.cutesoft.net/example/general.aspx
2. Clean the content and input the code below into HTML view
<p>this is a test
3. When you switch back to the Normal view, eidtor will close the <p> tag, like below
<p>this is a test</p>
Regards,
Ken