GoKawiilRooting a Googlebook disables phone-to-laptop app casting, Magisk creator confirms
John Wu, creator of Magisk and a Google employee, said on X that rooting a Googlebook blocks the app-casting feature that lets Android phones send apps to the laptop. He explained the phones refuse to cast because a rooted Googlebook fails hardware key attestation checks. Googlebooks have been on sale for about a month and are marketed partly on this cross-device casting capability.