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 :: the_taxonomy()
Retrieves a WOOF_Taxonomy object for the current taxonomy being displayed. This is only applicable to tag, category, or custom taxonomy archive pages.