mi 9T auto brightness not working


Hello
Eu dev rom me no auto brightness or screen rotation either.
I put back the stable 10, all good.
I put the stabilizer 11 on the screen again, and neither does the auto brightness.
Neither function does anything under 11.
I don't understand why when 10 is working perfectly.
In no app (browser, gps, factory programs,) I turn on the rotation in vain. Even so, the brightness does not change if I manually lower it to zero when the auto-reflector is off and then turn it on with the button. It doesn't work the other way around, I put my carbon black in max in the dark and then turn it on, but it doesn't take it back after five minutes.