Wiki no longer showing recent changes

Hi,

I've noticed that the Recent Changes page on the PostgreSQL wiki are
no longer showing newer changes:

https://wiki.postgresql.org/wiki/Special:RecentChanges

Looking at the GSoC 2016 page history, it's clear that there have been
quite a lot of changes on that page, but they don't show up on the
Recent Changes page:

https://wiki.postgresql.org/index.php?title=GSoC_2016&action=history

Is there some cache-invalidation problem going on here?

Thom