Per discussion in the link above, please add the namespace 102 ("Anexo") to $wgContentNamespaces on Portuguese Wikipedia.
I'm not sure, but this may also require to run some maintenance script to update the article count.
Version: unspecified
Severity: enhancement
URL: https://pt.wikipedia.org/wiki/Wikip%C3%A9dia:Esplanada/propostas/%22Arrumar_a_casa%22_no_dom%C3%ADnio_anexo_(19set2011)