$wgReferrerPolicy now supports having fallbacks for browsers that are not using the latest version of the Referrer Policy specification.
$wgFragmentMode is now set to [ 'legacy', 'html5' ] by default. This is a first step of migration to human-readable section IDs that will later result in 'html5' being the default mode.
The old CategorizedRecentChanges feature, including its related configuration option $wgAllowCategorizedRecentChanges, has been removed.
(T188472) The 'comma' value for $wgArticleCountMethod is no longer supported for performance reasons, and installations with this setting will now work as if it was configured with 'any'.
