Possibly a glitch: Uncredited cast listed but didn't appear on name and title pages.

Rapper 6ix9ine's former girlfriend and her twin sister appeared in music video for his 2020 song Gooba. Both were listed as uncredited casts on the edit page but did not appear both names on the name and title pages.

I believe this is a software glitch and possibly other name credits may have suffered the same issue so please fix this.