Same here. It seems it is Tapatalk issue with MIUI at least in my case. If I have Tapatalk installed then I frequently get com.android.systemui crash, if I have no Tapatalk installed then no any systemui crash for sure.
I also can't copy the log because it immediately switch to lock screen after tap on details but I successfully catch the log with screenshot. See attached.
Now I am testing again with Tapatalk installed but disabled floating notification.
Sent from my MI 5 using Tapatalk