I had the same problem with Mix 3, the full screen gesture mode didn't work. And at first launch the phone also does not open the Miui wizard but instead is the wizard of the original android version?
The effects of sunrise and sunset on Outer space style is reversed 12 hours with the system time of the phone.
for example, it is currently 8am but it shows when the sun has set at 8pm
You try to copy the file 3.2.1 twrp.img to the phone, use the flash image mode of recovery to write the file over the current recovery (do not choose boot), then reboot to recovery and install rom again.