Board Thread:Episode Discussions/@comment-25319479-20180614110007/@comment-25122992-20180616175832

Nope, Urashiki just switched between Byakugan and Rinnegan for a moment. Neither of the doujutsu somehow suffer from this switch, they're perfectly fine, it's just that they cannot be used in one eye at the same time, so the user must switch from one to another.