I was experimenting with HHVM repo authoritative mode again, and found out I cannot access Special:RecentChanges because it requires eval:
Fatal error: You can't use eval in RepoAuthoritative mode in /www/[...]/docroot/w/includes/TemplateParser.php on line 131
Not only that it is not supported in repo authoritative mode, I guess some people would like to disable eval for security reasons as well.