title: AjaxControlToolkit HtmlEditorExtender newline behaviour change
body: <p>I am trying to use AjaxControlToolkit for simple HTML page revisions and updates. However, recently I found quite odd behaviour.</p>
  
  <p>When pressing enter (to make some new lines) the editor does not write <br />. Instead, it wraps the remaining part of text in TextBox into a  or . This, however causes trouble when inserting new line in various places inside the HTML code. Many times, something like this was generated:</p>
  
  <pre><code>some text
  &lt;div&gt;&lt;div&gt;&lt;span&gt; some more text &lt;/div&gt; &lt;/span&gt; &lt;/div&gt;
  </code></pre>
  
  <p>which broke the page. In fact, I only wanted to get:</p>
  
  <pre><code>some text
  &lt;br /&gt;
  &lt;br /&gt;
  &amp;nbsp; some more text
  </code></pre>
  
  <p>I have come around this by replacing those tags with empty strings in code behind, before saving the text. However, sometimes I get  with some width attributes and I am unable to catch all possibilities.</p>
  
  <p>Is there a way how to change this behaviour? I am using the HtmlAgilityPackSanitizerProvider sanitizer.</p>