I have found an issue in this question: How to get list of values in GROUP_BY clause?How to get list of values in GROUP_BY clause?
Check this out. I enter the following piece of HTML:
<code><pre>hello</pre></code>
It is rendered as such:
hello
When I check the rendered HTML in my browser, what I get is this:
<p><code></code></p>
<pre><code>hello</code></pre>
So some extra <code/>
element and paragraph are rendered.