Sub surface shading model has strange blotch color artifacts when used with ambient cubemap. Since the subsurface profile shading model can't be used with ambient cubemap I wanted to use the regular subsurface shading model but it has visible artifacts when used with ambient cubemaps. These are not affected by opacity for some reason. When used with regular lighting they seem fine, you can't see light on the other side through the mesh.
Found in 4.22 CL# 7053642, 4.23 CL# 8386587, and 4.24 CL# 8971176
You see the color change (when the sphere is in the bottom of the view it looks normal, when it's at the top it's very colorized. When dragging there's a visible line (in the middle of the screen) where the color changes. Also this isn't affected by opacity at all which is strange.
It is affected (lit) by the ambient cubemap but there are no blotchy artifacts or color changing when you drag the view around.
There's no existing public thread on this issue, so head over toAnswerHub just mention UE-80691 in the post.