He mentioned in the interview they relied a lot on the wiki to translate things like titles, so if that never got checked by NISA either, or they simply didn't edit the image containing Yukari's title, it's definitely plausible.
I really hope NISA does Genso Wanderer more justice because so far, editing this seems like it was more of an afterthought. If they didn't have the original JP to go by, there was only so much the one editor could have done, but it shouldn't have been that slap-dash regardless.