The good news is that it looks like OnePlus has figured out what the problem is and has announced that a fix will be rolled out in the next update. According to OnePlus, “As planned, a new Open Beta build for OnePlus 5/5T has been released yesterday, which has a new feedback tool integrated into our community app, and some other system optimizations. Plus, we have noticed feedback from some users regarding the adaptive brightness feature on the OnePlus 6, it will be optimized in the next OTA update. (to be released very soon!)”
Prior to this the company did not seem to know what the problem was and were asking users to submit the logs from their phones as well as any potential video that could capture the problem in action. Like we said the problem seemed to have to do with how the phone perceives light and adapts its brightness accordingly, and we suppose it has since been confirmed.
No word on when the update will be pushed out but since the August Android security patch has yet to be released, we suppose it shouldn’t be too long until we see it.