This is simply down to the fact that Kurama now belongs to none other than Himawari Uzumaki. She is the Jinchuriki of the Nine-Tails, and she will continue to hold this Beast for the foreseeable ...
Minato's Kurama Chakra Mode is a unique addition to his powers and stands out in the Naruto series. Minato became the Nine-Tails' Jinchuriki shortly before being sealed inside the Shinigami's stomach.