Like some other guys, I'm having this wifi issue. Simply don't work and when I go to the settings it crash. I did a clean and a dirty flash, always the same issue. Spotify have some bugs too, but for me the wifi is more important. I have a MI 9.
There is any guy that have Mi 9 and don't have this issue to tell us the steps to get everything working?
I don´t have this issue.
There was only the fingerprint problem.
Watch the post: https://xiaomi.eu/community/threads/20-12-28-29.59085/post-581272