Recently by unknown cause Russian Wikipedia sysops (Администратор-ы) have received review rights as default (https://ru.wikipedia.org/wiki/Special:ListGroupRights).
review rights are part of Патрулирующий's rights (https://ru.wikipedia.org/wiki/Wikipedia:Патрулирование) and can not be included in Администратор's arsenal as default
Администратор must have autoreview rights (Автопатрулируемый) only as default.
See also https://ru.wikipedia.org/wiki/MediaWiki:Userrights-groups-help