So, I was on PE+ with OrangeFox recovery installed. Was thinking of switching back to Arrow OS latest December (Android 10) build. I decided to start from scratch. Flashed MIUI 12.0.3.0 fastboot ROM, then flashed latest TWRP 3.5.0 and boot into it, formatted data and wiped system, data, cache and flashed Arrow OS. Everything went good and device booted into system. However, later on when I went back to TWRP to take a backup, first it showed me the swipe to modify screen which I already swiped after flashing TWRP. Afaik, it only asks once and after acknowledging, it doesnt ask again. That was the first bug I noticed. Second is, everytime I reboot to TWRP, my preferred settings (like time zone, brightness etc) gets reset to default. Before someone says I did something wrong, let me tell you when I had TWRP 3.4.0 (the last version), I didn't have any of these bugs.
Update: NM, after a few reboots to TWRP, my problem is fixed as of now.