Hello, i made a simple post process material with 3 nodes
-Scene Depth
-Divide
-Constant
i divide the scene depth by the constant with value 10 000. I plugged the result to Emissive color.
And i have this result, i tryed on differents project with version 5.0.3 and and differents computers, it’s doesn’t work 
Mabye someone had the same problem before, thank you for you answer
I have the same problem, seems to be caused by the “Screen percentage” amount, if you set it to 100% it should act like normal, must be a bug.
The “absolute world position” node seems to have the same issue.
Think I found a workaround, use the “SceneTexture” and a “BreakOutFloat4Components” node, the R output should be the same as the SceneDepth node 
Submitted a bug report, can follow status status here:
