Hi, I was just wondering if this was a bug or intentional in the newer iteration of the engine.
I was using 4.9 and area lights to light my scene (a spotlight aimed at a white plane mesh to give indirect light bounces to the scene). When I use this lighting technique, I usually set the plane mesh to be hidden in-game. In 4.12 when I try to hide the actor in-game and build my lighting, the lightmass system now considers it hidden as well in the lighting bake process, thus my scene is completely dark. This was not the case in 4.9 where I set the actor to be hidden in-game and still build my lighting with it working properly.
Now I have to first disable “Actor Hidden In Game” and THEN build my lighting with the light planes and the spotlight. After I finish building my lighting than can I only safely hide my light plane meshes. I’m curious to know if this occurs with other people as well as it is a little annoying having to turn it off and on again to hide the light planes.