1 i set materel in postprocessVolume.
2 .i use sceneTexture:postprocessinput1 node in material editor
3 .i set a object location at (-2000000,0,0) far distance from(0,0,0)in the world
4. move camera view at object.
5.the editor crashed and report error:
do you have any idea avoid this crash problem.Postprocessinput1 is only node can exprot opecity channel as far as i kown. May be epic will fixed this bug soon.