Having this page as an example [1], you will see that first two interwiki links with "w" are linking to br.wikipedia. However, br.wikipedia has nothing to do with br.wikimedia. It should be linking to pt.wikipedia.
[1] - https://br.wikimedia.org/wiki/Usu%C3%A1rio:Teles
Regards.
Version: wmf-deployment
Severity: normal
See Also:
https://bugzilla.wikimedia.org/show_bug.cgi?id=55733