I am migrating a plethora of PDF documents from an old knowledge base and trying to embed them in new solution articles using iFrame. Freshdesk editor appends “sandbox="allow-scripts allow-forms allow-same-origin allow-presentation” which results in Chrome and Edge displaying “This page has been blocked by Edge”. 

If I do the same thing in Freshservice with an embedded iFrame PDF it works perfectly in Edge and Chrome and the editor does not append sandbox settings to the end of the code.

Is there a setting in Freshdesk that I can turn off to prevent the code being appended?

Thanks in advance for any assistance.