Yes, that one and lots of others, most of them seem to be using the same slug for both the post type and the taxonomy which for me results in a 404. I did at one point get it to work for the custom taxonomy but then the custom post type 404’ed
so I had example.com/post_type/categorey (working)
example.com/post_type (not working)
example.com/post_type/post (not working)