Hey, sorry just hopped back to check this thread
On light mode (white backgrounds, Home Screen, web, basically anything that is not pure dark and is being moved fast) it doesn’t happen because every pixel is lit. This minimizes the effect because everything has a brightness value. Those pixels are already on. Also, do a quick search online… Apple has two manufacturers for the 12 series and one of their displays suffers from green tint.
https://www.gizchina.com/2020/11/19/iphone-12-green-screen-check-if-your-device-is-susceptible-to-this-issue/
Nonetheless, I’m Light Mode everything (or mostly everything) is lit therefore reducing the effect since no individual pixels have to turn back on in a fraction of a second and the coverage area is greater than the actual artifact and the display is already fully lit.
Idk if it made sense, I hope it sorta did. But check the article, also do some more general OLED display searches online, it’s very common