I just switched from Mi 11 Pro latest stable to latest weekly and it's so much better, so thank you to the devs.
Notifications are working, battery drain seems to be higher but maybe it will need some days.
There is still one bug with the dual apps:
If an app is forwarding to chrome during the sign in process it's not working when chrome is forwarding back to the app after I typed in my log in details. So in the end I have to interrupt sign in process.
It looks like the second instance of the dual app is receiving log in details from the first instance because app in chrome is saying "welcome back xxx, do you want to sign in again?". So some data is in the app cache which is wrong and is disturbing the sign in process in the second instance.
Can someone check it?