Optimization - Updated Android Security Patch to January 2022
Fix - "Dual band Wi-Fi speed boost" in "Wi-Fi assistant" settings was missing [Supported devices only]
Fix - WhatsApp crashed at launch on Second space and Dual apps

Lock screen
Fix - Sometimes Lock screen clock and date color weren't adjusted to the wallpaper properly

Fix - Permissions dialog on initial startup of apps installed from unknown sources was missing [Android 12 only]

Fix - Font weight slider was being overlapped by the full-screen gestures indicator in Font settings

Control center
Fix - Quick settings layout "Compact" had no effect [Android 12]

Fix - App was crashing when accessing "Advanced settings"

Warning: Camera doesn't work properly on Mi 10T Pro. We don't recommend upgrading to this version if you own Mi 10T Pro. Redmi K30S Ultra/Mi 10T camera works fine.

Tip for Android 12 devices: Because TWRP doesn't work with Android 12, the update needs to be flashed in Fastboot mode. Download the ZIP package, unpack it and run update script (without formatting data if you're moving from Android 11 ROM or with format data if you're flashing it first time).

This changelog doesn't mention all changes made by or Xiaomi.