[Mediawiki-api-announce] Change in behavior for list=allpages&apfilterredir=(redirects|nonredirects)
For performance reasons, when "miser mode" is enabled, as it is on WMF wikis, queries to list=allpages using apfilterredir=redirects and apfilterredir=nonredirects may begin returning fewer than the requested aplimit results before continuation. In extreme cases, zero results may be returned.
This change has just been made and will be deployed in the next few hours so Special:AllPages may be re-enabled.
This is not classified as a breaking change since the API has reserved the right (since 2009 if not earlier) to do this sort of thing as it may become necessary.