Thanks to Owen, we now use the entire category hierarchy when resolving category URIs. Previously, subcategories with the same name but different parents were not addressable. This bug has been around for awhile, and I’m glad to finally be rid of it. Now we need to do the same thing for pages.
This is awesome news. I just found this bug on my own site while revamping it (and revamping the URI’s). I was kind of shoked to see WP didn’t fix this when it was first implemented. But it would seem no more! Yay!
Good news indeed. Ryan, I think you may want to close out #1298.
We should probably try something similar with Pages, too, if that bug is similar.