I’ve added an “order” field in the Category Meta Settings page for a custom taxonomy called “applications”. Unfortunately, the field doesn’t appear when I go to add a new term to the custom taxonomy.
I’ve tracked the problem down to line 71 in wp-category-meta.php:
Checking the value of $wptm_taxonomies shows me that it’s not returning any of my custom taxonomies. That means your calls to register actions for _add_form_fields and _edit_form aren’t getting called for custom taxonomies.
Weirdly, line 162 in options.php does return them, so they are showing up in the drop-down on the Settings page:
I tried passing array('_builtin' => false) as the first parameter and I got back an empty array. Passing array('public' => false) doesn’t help either. Don’t see anything in the docs about why it wouldn’t return them either.