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Inconsistent brightness when changing refresh rate

Star II
Hello, I am noticing a very annoying increase in brightness when the display refresh rate switches to 90Hz (from 60Hz or 120Hz). This is particularly evident when the phone is in dark mode and the auto refresh rate is turned on: touching the screen triggers a refresh rate change to 90Hz with the associated brightness change.
Could this be fixed with a better screen calibration?
Here is some basic info:
Model Name: Zenfone 9
Firmware Version: WW_32.2050.2050.34
Rooted or not: No
Frequency of Occurrence: Very frequent

Star II
I confirm this problem  
Certainly on a dark theme the brightness goes crazy when changing the refresh rate .

Someone else also mentioned a yellow screen at 90hz - also very noticeable especially with minimal screen lighting.