They never stopped. Here's the always up to date list and the reason per country: https://home-affairs.ec.europa.eu/policies/schengen-borders-and-visa/schenge

They never stopped. Here's the always up to date list and the reason per country: https://home-affairs.ec.europa.eu/policies/schengen-borders-and-visa/schengen-area/temporary-reintroduction-border-control_en https://home-affairs.ec.europa.eu/policies/schengen-borders-...