TYPO3 Core

When i insert the following content via html content element into the page:

<script src='http://somedomain/mymon_form_log.js&#039; type='text/javascript'></script>
<script type='text/javascript'>//<![CDATA[
TryCookie('mymon_form_log_1');
var form_url = 'http://somedomain/?u=customer&t=1&js=1&a=view&r=' + GetCookie('mymon_form_log_1');
document.write('<img src=\'' + form_url + '\' width=1 height=1 border=0 alt=\'\'class=noborder>');
//]]></script>
<noscript><div><img src='http://somedomain/?u=customer&amp;amp;t=1&amp;amp;a=view&amp;amp;r=0&amp;amp;js=0&#039; width='1' height='1' alt='' class='checkeffect_img' /></div></noscript>

it is being rewritten to this:

<script src="http://somedomain/mymon_form_log.js&quot; type="text/javascript"></script>
<script type="text/javascript">//<![CDATA[
TryCookie('mymon_form_log_1');
var form_url = 'http://somedomain/?u=customer&t=1&js=1&a=view&r=' + GetCookie('mymon_form_log_1');
document.write('<img src="\" form_url="" width="1" height="1" border="0" alt="\" class="noborder" />');
//]]></script>
<noscript><div><img src="http://somedomain/?u=customer&amp;amp;t=1&amp;amp;a=view&amp;amp;r=0&amp;amp;js=0&quot; width="1" height="1" alt="" class="checkeffect_img" /></div></noscript>

1. create a content element of type html
2. post that "thing" into the content element.
3. go into frontend and view the page with the inserted content.

1a. create a typoscript html element
2a. insert the code as value into that element
3a. go into frontend and view the marker with the inserted code

(issue imported from #M12655)