Auto brightness goes completely down in low light

Hi, an issue I had at the release of the FP5 is now back after my FP5 got repaired because of the fingerprint-thing. They exchanged the frame and since that repair, my auto brightness doesnt work anymore in low light conditions.

When I unlock the phone in low light, the auto brightness goes down to minimum. When I adjust it to a higher state, it goes down to minimum again. When I adjust it again, it stays there as long as I switch off the screen and unlock the phone again. Then, it is at minimum brightness again.

There’s noch learning at all, I play the same game for nearly two months now.

What I dont understand: years ago there was an update that fixed this behaviour and now it is back after the frame exchange?