Could you check if system launcher is selected as the default launcher also a logcat would be really helpful for the developers
Sent from my Redmi Note 7 using Tapatalk
I have the same problem, the drag-up gesture doesn't work. Dragging sideways works normally.
In addition, the full screen indicator is not displayed, nor is there a setting to enable it.
I performed a clean installation.
Redmi 8
MIUI 12.0.1.0 xiaomi.eu
System launcher stable version (RELEASE-4.21.7.2757-01141112), and set as default.