Fields of html type are already escaped in database and the method `append_content_to_html` defaults the argument `plaintext` to True, then calls `plaintext2html` if this argument is True, resulting in the html signature being escaped twice.
Fields of html type are already escaped in database and the method `append_content_to_html` defaults the argument `plaintext` to True, then calls `plaintext2html` if this argument is True, resulting in the html signature being escaped twice.