BUG? Portfolio Ajax Accordeon No HTML support

Hi,
I have no idea what I’m doing wrong:
In the Ajax Window of Portfolio I added accordeons like at your demo. At the content of the accordeon I used simple formats like strong, list etc.
I don’t know why, but I get only the code shown:

At the first Element at the left

http://pasteboard.co/6fa3P9vCj.jpg

<strong>Auslöser von Migräneatacke – Migräneanfälle</strong>

Nackenschmerzen – Kopfschmerzen – Augenschmerzen
<ul>
<li>Was sind Migräneschmerzen eigentlich?</li>
<li>Welche Schmerzformen gibt es?</li>
<li>Was für Symptome, Funktion haben sie?</li>
</ul>

I reinstalled the current version but don’t get it fixed. I also deleted all css in child theme with no effect.
When I use the code in
In you demo this is working:

Thanks a lot for your help in advance !

Greetings
Michael