[Bug] Screen brightness repeatedly dims/brightens on own

[thetrashcanhero]

Checklist (Your issue will be automatically closed if you delete this part)

• I make sure that there are no existing issues - open or closed - which I could contribute my information to.
• I understand that issues with limited impact, such as those occurring on specific devices or under specific network conditions, will not be fixed.
• I am able to reproduce the bug with the latest version given here: CLICK THIS LINK.
• I have attached the error report in the issue.

Describe the bug
When watching a video in full screen, the screen will repeatedly dim then brighten back up on its own.

Frequency
More often than not

Steps to reproduce the bug
Play video
Put video in full screen
Screen dims and brightens randomly throughout the video.

Device (e.g. Pixel 9 Pro)
Pixel 9 Pro (GrapheneOS)

Error report
n/a

Additional context
Doesn't happen on all videos, just randomly.

[InfinityLoop1308]

Maybe you turned on Adaptive Brightness on your device?

[thetrashcanhero]

Maybe you turned on Adaptive Brightness on your device?

Negative. For what it's worth though, it happens with Tubular too.

[thetrashcanhero]

Also happens on my Pixel Tablet which also is running GrapheneOS.

[thetrashcanhero]

You can disregard this issue as it is not app related. When investigating further it is a software issue that happened with a software update earlier this month.
Pixels latest update is randomly dimming screens