Requested in https://udn.unrealengine.com/s/question/0D5QP000006g7Px0AI/auto-exposure-various
Previously discussed in https://udn.unrealengine.com/s/question/0D52L00004vKeNJSA0/blending-postprocess-exposure-compensation-curves
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-218857 in the post.