Having such issues on Redmi Note 5 whyred from 9.3.28 and on 9.4.11 nothing changes:
1) Graphic power bar showing bullshit (near full when it is only 10%, charging green when it is offline), going back to normal after restart then everything comes back.
2) Google assistant not showing up after...
I did a dirty update from 9.3.14. Everything was so so smooth except of loosing SD Card and encrypted TWRP, however I found working TWRP, installed it and even made GCAM worked. So everything is ok now.
Whyred note 5
1)bluetooth going offline repeatedly
2)carousel again not working
3)calendar widget crashes when tapping day
4)many untranslations in curtain, lockscreen, setup etc (russian)