Thanks for the answer.
I reinstalled the firmware. Before installation I made, as usual, format System, Vendor and wipe all caches. Also I delete the folders Android and MIUI.
The result is the same. Video.
No idea why this is happening yet.
The translation in 9.6.20 is broken.
The resource values-ru for Russian locale is missing in MiuiSystemUI.apk
In repository values-ru are present.
Please make the correct MiuiSystemUI with the addition of a Russian translation and make separate patch for it or...