the_post_navigation not excluding terms - wp 4.7.4

[Sbaxter_Quba]

I'm retrieving the post navigation as so

<?php
$args = array(
        'in_same_term' => true,
        'excluded_terms'     => '129',
        'taxonomy' => 'category'
    );
    the_post_navigation( $args )

I've debugged and it constructs the $where clause here as it should (properly excluding the term) ​https://github.com/WordPress/WordPress/blob/master/wp-includes/link-template.php#L1647

$where =
AND tt.taxonomy = 'category' AND tt.term_id IN (127) AND p.ID NOT IN ( SELECT tr.object_id FROM wp_term_relationships tr LEFT JOIN wp_term_taxonomy tt ON (tr.term_taxonomy_id = tt.term_taxonomy_id) WHERE tt.term_id IN (129) ) AND ( p.post_status = 'publish' OR p.post_status = 'private' )

This is then replaced here ​https://github.com/WordPress/WordPress/blob/master/wp-includes/link-template.php#L1716 it improperly constructs the where clause so that the result is as follows

$where =
WHERE p.menu_order > '2' AND p.post_type = 'post' AND p.post_status = 'publish'

This means i cannot excluded other categories from the post navigation or specify which categories to exclude.