* The skin autodiscovery mechanism, deprecated in MediaWiki 1.23, has been
removed. See https://www.mediawiki.org/wiki/Manual:Skin_autodiscovery for
migration guide for creators and users of custom skins that relied on it.
-* Javascript variable 'wgFileCanRotate' now only available on Special:Upload.
+* Javascript variable 'wgFileCanRotate' and 'wgFileExtensions' now only
+ available on Special:Upload.
* (T58257) Set site logo from mediawiki.skinning.interface module instead of
inline styles in the HTML.
* Removed ApiQueryUsers::getAutoGroups(). (deprecated since 1.20)