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_Post :: url_in_site()
Returns the root-relative URL of this field within its site in a multi-site environment. This method takes into account a site which uses a directory fragment for its top-level url, and will remove that fragment in this case.