Nothing cost me to try. How can I get from stable Rom to weekly Rom??I had the same issue and hence I moved to Weekly ROM.
I believe v14.0.23.3.20 (maybe) clearly states that auto brightness fix was applied to this ROM
Honestly you'll feel a lot better on the weekly rom. Give it a try if you can.
Sorry couldn't be of much help bud.
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Sent from my M2102K1G