I am on the latest update as well and I noticed that in my office wifi is on Channel Width 20 (2.4) and Channel Width 80 (5) and the mobile is not seeing the 2.4 GHz on HT20. Whereas the 2nd WiFi is on both Channel Width 40 and its showing so mean in the latest update Channel Width 20 is...
So the Google Maps is fixed on the Samsung but on the Mi Mix still having the same issue. I installed the same APK on both phones. So the issue is with the MIUI....
I am having the same Issue with Maps, you can set the destination and as soon as you start driving it's not responding and close. I have Mi Mix and having the same Issue on my Samsung Note 9 as well. All the other apps Sygic and Waze working fine.