Try updating it via Fastboot. The thing about the missi thing is that I have recently extracted the ROM for my device (Redmi Note 11 Pro 5G) and it also said that it's for device MISSI. It is possible that with MIUI 14 Xiaomi somehow messed the ROM so much that it thinks it's for a device that...
You don't need TWRP for the ROM to function properly. It doesn't cause any problems. It may be a slight inconvenience for you as you will have to have a computer near you to perform an update via Fastboot.
Just flashed it and everything works like it should. Also the performance of the Control Center is the same as with the white tint so I guess you were right.
The animation of going from the device being turned on to turned off. It just cuts straight to black with no animation. Video example:
https://streamable.com/o20u37