Engine Scalability turns camera preview white

On the Engine Scalability Settings if I change the Post Processing settings from Medium to High this happens:

Medium Setting


and if change to High


It seems there is a fog somewhere that get activated.

So, I understand now, why this happening. I just don’t know if this is a bug, or I am doing something wrong. If you go to the Post Processing Volume and you turn off the Exposure

Auto Exposure
Method - Auto Exposure Histogram
Min Brightness - 0.0
Max Brightness - 0.0

This is set the camera preview to white or blown out. I am using 4.18 and on 4.17 this doesn’t happen.