I haven't been able to find the code to nail down the problem, but the FieldsAPI plugin, 0.0.7 Alpha currently breaks the filter taxonomy_parent_dropdown_args
To test this, make sure you have some tags and categories, add this function and view your category add page, and you will see categories in the Parent dropdown, instead of tags. Now disable the Fields API plugin, and you'll see tags instead of categories.
add_filter( 'taxonomy_parent_dropdown_args', 'change_parent_taxonomy', 10, 3); function change_parent_taxonomy( $dropdown_args, $taxonomy, $form ){ $dropdown_args['taxonomy'] = 'tags'; return $dropdown_args; }
I haven't been able to find the code to nail down the problem, but the FieldsAPI plugin, 0.0.7 Alpha currently breaks the filter
taxonomy_parent_dropdown_args
To test this, make sure you have some tags and categories, add this function and view your category add page, and you will see categories in the Parent dropdown, instead of tags. Now disable the Fields API plugin, and you'll see tags instead of categories.add_filter( 'taxonomy_parent_dropdown_args', 'change_parent_taxonomy', 10, 3); function change_parent_taxonomy( $dropdown_args, $taxonomy, $form ){ $dropdown_args['taxonomy'] = 'tags'; return $dropdown_args; }