My Samsung Galaxy S10+ was recently updated to the new OneUI ver3.0 OS about a week ago. My 2018 RDX had the latest OTA update applied about 3 weeks ago. I never saw the following issue until after my phone was updated to OneUI.

Ever since, every time I use the phone in my vehicle with Android Auto engaged, the Adaptive Brightness gets disabled (I normally have it enabled) and the brightness level gets lowered to near the bottom end of the scale (dark) so that in order to see the screen to rest the brightness I have to put my coat over my head when in the vehicle during the day.

It never did this before the update to OneUI. It only happens when connected to my vehicle and Android Auto but it does not happen if it is for a short period of time. If I connect in the vehicle and then disconnect without going into the Android Auto screen, this does not occur. It does not happen if connecting via USB to a laptop or PC.

Is anyone else seeing similar?