Flashed for Poco F1. Initially, during sign-in to Google account, the screen goes blank/black. Not showing Google sign-in page. But after reboot, can sign-in like usual.
MGC *no-support-for-this-app-on-this-forum* version MGC_6.1.021_MI8_POCO_V1a = Night Sight is working flawlessly.
Overall, so far, very compelling release...