We can see refraction gets distorted after we have a bigger PDO value, and it's not because the depth is more shallow, but looks like some kind of scene color texture lookup error.
Also, not sure if related, but instinctively PDO should be accounted for light transmission calculation. Currently it does not.
I've attached a uasset for ease of reproducing.
If reproduce manually:
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-102259 in the post.
|Component||UE - LD & Modeling - Terrain - Water|
|Created||Oct 29, 2020|
|Resolved||Oct 18, 2021|
|Updated||Dec 1, 2021|