Bug: DirectLink url for show in browser not correct format

Question

Show in Browser link for Direct link should be
https://tracking.directlink.com/multipletrack-client2.php?lang=en&postal_ref_mode=1&postal_ref_no={package_ref#}

Instead in Deliveries it is missing an ampersand between lang=an and postal_ref_mode=1
Example: https://tracking.directlink.com/multipletrack-client2.php?lang=enpostal_ref_mode=1&postal_ref_no={package_ref#}

While tracking info still colmes up, an error is displayed on the page showing unsupported function.