9.6.20 android 9 was still.
20.1.2 newest release android 10 working on my mix2s smootly.
- in fastboot mode flash newest twrp from https://twrp.me/xiaomi/xiaomimimix2s.html
- back main android apps (e.g. android system webview, google play, google services, google app) to...
When the first beta Android 9 -> 10 dirty rom flash switch, more apps no worked for me (chrome, google play, etc.)
I back to factory default (Google play, services, webview ...), and remove Chrome app and reboot my phone, and install the Chrome app.
Try newer TWRP - 220.127.116.11 - https://eu.dl.twrp.me/polaris/
Unlock phone needed. - https://en.miui.com/
If you goes stable or global to EU "Beta" or EU stable ROM in TWRP format DATA partition - wipe not enough.
After first flash rom, update for example EU beta to EU beta, enough dirty update...
Try this week2week update method if yuo use magisk!
- before flash!
Clean cached data in setting -> storage menu (smaller size backup)
remove magisk manager if you hide manager program
(most bank app search original Magisk manager name, and say "Rooted phone...")
Copy to phone
Great job, Nice Work!
Last 2 week bug - Long press Home button fixed,
Sensors test working first time run.
Hungarian language Settings menu - more translated
Everything works fine, except vol down + power screen shoot
Video, audio play ok
Google pay not tested
Mi Mix 2s, Magisk 20.0 stable...
My phone does not animate at first screen lock after boot. The second time I unlock with a screen lock or with a fingerprint, I only see the end of the animation. Third and beyond, it works fine.
Try applying the theme again in the settings menu or changing the font (if use), too.