Fun Fact about freezing on the Mi 9T devices:
If you turn off the authentications (PIN and fingerprint), the device very rarely freezes. For me, it now only freezes 1-3 minutes after "going into sleep", regardless of whether the AOD is active or not.
This doesn't really help in daily operation...
Unfortunatly, my last post was a bit too quick. After a little while, for me too, the freezes started again.
So, like you, i'm back on 21.3.18, where i had no issues last week, but now with freezes. :(
I did the update exactly as I have been doing for the last 50-60 weeks since I started using the 9T with the beta.
I update either via OTA or via orange fox and I don't use any special features except clearing the cache/Dalvik. I don't use root or magisk. This is the first time in about a year...
The same thing happens here. The device freezes very often, mostly in the lock screen, but also under the AOD screen.
This morning it even happened between two snooze phases of the alarm clock ... I only noticed it an hour later ;)
Regarding the crashing apps, Google has released two updates this morning, for "Android Web View" and for "Chrome". These are supposed to fix the problem. (They seem to work for me, but I didn't notice the problem yesterday anyway).