Duplicate Category and Tag Name

[alogblog]

Add a new Tag, for example, "Car". Then it's default slug becomes "car".

And then add a new Category named "Car", which is same to above tag name.

I think its default category slug has to be "car-1", but resulting slug is "car".

I read below documentation in function wp_unique_term_slug($slug, $term);

"The $slug has to be unique global to every taxonomy, meaning that one
taxonomy term can't have a matching slug with another taxonomy term."

Is it bug?

[SergeyBiryukov]

Currently, terms with the same name in different taxonomies can share the same slug.

Related: #5809, #21950, #22023

[nacin]

Duplicate of #5809.