The reason is probably that this is not the module's aim. If I were writing an SGML parser, I wouldn't add workarounds to deal with the commonly malformed HTML found out there on the web. Similarly, the
module's docs note that it's not a generic SGML parser because it does include such kludges. In your case, I'd pass
the address and given failure, check if it's kludgable and possibly pass it back in for another check.