Capability Taxonomy

Hi
I have a taxonomy with custom capabilties. This is output of get_taxonomies() :

[tamano] => WP_Taxonomy Object
(
	[name] => tamano
	[label] => Tama?os
	[labels] => stdClass Object
		(
			[name] => Tama?os
			[singular_name] => Tama?o
			[search_items] => Search Tama?os
			[popular_items] => Popular Tama?os
			[all_items] => Todos los Tama?os
			[parent_item] => Tama?o Padre
			[parent_item_colon] => Parent Tama?o:
			[edit_item] => Editar Tama?o
			[view_item] => Ver Tama?o
			[update_item] => Actualizar Tama?o
			[add_new_item] => Agregar Nuevo Tama?o
			[new_item_name] => Nuevo Tama?o
			[separate_items_with_commas] => Separate Tama?os with commas
			[add_or_remove_items] => Add or remove Tama?os
			[choose_from_most_used] => Choose from the most used Tama?os
			[not_found] => No se encontraron categorías.
			[no_terms] => No hay categorías
			[items_list_navigation] => Navegación por la lista de categorías
			[items_list] => Lista de categorías
			[most_used] => Más utilizadas
			[back_to_items] => ← Volver a categorías
			[menu_name] => Tama?os
			[name_admin_bar] => Tama?o
			[archives] => Todos los Tama?os
		)

	[description] => Tama?o con respecto al número de empleados
	[public] => 1
	[publicly_queryable] => 1
	[hierarchical] => 1
	[show_ui] => 1
	[show_in_menu] => 1
	[show_in_nav_menus] => 1
	[show_tagcloud] => 1
	[show_in_quick_edit] => 
	[show_admin_column] => 
	[meta_box_cb] => post_categories_meta_box
	[object_type] => Array
		(
			[0] => empresas
		)

	[cap] => stdClass Object
		(
			[manage_terms] => manage_tamano
			[edit_terms] => manage_tamano
			[delete_terms] => manage_tamano
			[assign_terms] => edit_posts
		)

	[rewrite] => Array
		(
			[with_front] => 1
			[hierarchical] => 
			[ep_mask] => 0
			[slug] => tamano
		)

	[query_var] => tamano
	[update_count_callback] => 
	[show_in_rest] => 
	[rest_base] => 
	[rest_controller_class] => 
	[_builtin] => 
)

But in this plugin is not showing these capabilities : manage_tamano

Regards