On https://xtools.wmflabs.org/globalcontribs/ipr-37.147.21.15/22, "u.wikipedia" is shown instead of "ru.wikipedia":
Description
Description
Related Objects
Related Objects
Event Timeline
Comment Actions
Ah, so that was the error. Thanks! Funnily, https://xtools.wmflabs.org/globalcontribs/Ssgapu22 shows just "wikipedia" instead of "or.wikipedia.org" for the same reason.