wordpress_nav_menu does not find my custom menu (even if known as by title and never location) when I am searching inside my taxonomy term pages.

I've checked everything - the mistake isn't with my taxonomy.php template, as these taxonomy term pages do not show a menu even when taxonomy.php is erased and they're instructed to default towards the index.php template. So far as I will tell, there's something innate about pages that question a particular term of the custom taxonomy which makes wordpress_nav_menu won't return anything when loading them.

SO frustrated! Somebody must know of this before!