Normal or Problem?

[3abra7manist]

I have a Note 20 Ultra 5G exynos, after updating to OneUI 4 I noticed that if I enabled 120 hz and extra dim and make the brightness to the lowest, the grey color becomes reddish. If I go back to 60 hz or disable extra dim or increase the brightness, things become normal.

Is this a hardware or software issue? How can it be resolved? Kindly help me

See the attached photos and videos

As the dim intensity increases, the red color increases & the brightness decreasès

By the way, I replaced my screen due to green tint and some deficiencies on last October on the warranty, but the warranty is ended since last November.

[3abra7manist]

I sent an error report with the attached photos (couldn't upload video due to large size), I am waiting for their reply.