Masterpress 1.3.6 is a compatibility release. It resolves an edge case with shared fieldsets not working for MySQL 8 when the fieldset is limited to more than 1 post type or taxonomy or excluding any post types or taxonomies.
WOOF_Term :: ancestors()
Retrieves a collection of ancestors for this term from lowest to highest in the hierarchy
This will only return meaningful results when the term is based on a hierarchical taxonomy.