LicenseCart seems to say there is no complaints from him from his customers so we might have finally made the module stable lol.
If you haven't already check it out: https://cubedata.net/fraudrecord
https://marketplace.blesta.com/#/extensions/22
Adding hmtlentities() to line 384 in components/delivery/postal_methods/postal_methods.php as follows seems to have fixed my specific issue:
$address_xml .= "<" . $key . ">" . htmlentities( $value, ENT_XML1 | ENT_DISALLOWED ) . "</" . $key . ">\n";