Edit: Confirmed through tests that unchecking the “Force custom post types to use their own capabilities” gives everybody back the option to manage CPT Categories. However it also means each and every role has access to all contents types, and that editing a permission for a specific contents type give the same one on every CPT. Made to work like this when the option above is not checked, but an issue for us.
Did I overlook a way to have specific roles edit custom types categories ? Else how to solve this ?