Auto brightness keeps turning off by itself

[zaru_udan]

Please tell us some basic information before asking for help:
Model Name: zenfone 7 pro
Firmware Version: 29.13. 7.24
Rooted or not: no
Frequency of Occurrence: daily
APP Name & APP Version (If your issue relates to the app):
In addition to information above, please also provide as much details as you can, e.g., using scenario, what troubleshooting you've already done, screenshot, etc.
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My auto brightness always turns off automatically after 24 hours or when I go sleep.

Why does this happen? I never touch the brightness slider too..

[alari_zupping]

Yes, right. But then it's normal:
(Sorry, Can't post full link )
From android-developers.googleblog.com/2018/11/getting-screen-brightness-right-for:
"Android will learn what screen brightness is comfortable for a user in a given lighting environment. The user teaches it by manually adjusting the slider, and, as the software trains over time, the user should need to make fewer manual adjustments"

[zaru_udan]

Hmm really, adjusts it says which I know since the birth of Android.

But this is the first phone ever out of my 10 Android devices that auto brightness TOGGLES Off..
I guess I'll have to see after a couple weeks

[zaru_udan]

So it still automatically turns off after several weeks in total. What's wrong?