bug delete_term

if i have two categories with custom fields, eg 2 and 21, and I want to remove category #2 function delete_term() will delete in both categories!

fix

function delete_term( $term, $tt_id, $taxonomy, $deleted_term )
	{
		global $wpdb;

		$values = $wpdb->query($wpdb->prepare(
			"DELETE FROM $wpdb->options WHERE option_name LIKE %s",
			'%' . $taxonomy . '_' . $term . '\_%'
		));
	}

https://ww.wp.xz.cn/plugins/advanced-custom-fields/