When you review an article with PageTriage, it fires one request to set the reviewed status and then a 2nd request to refetch the data for the page. The first request invalidates the cache and the 2nd rebuilds it. On test.wiki it looks like the 2nd request is rebuilding the cache before the changes from the 1st request have propagated to the slave DBs. This problem doesn't seem to occur on en.wiki though.
Version: unspecified
Severity: normal