UPBGE 4.3 Volume-Scatter Node no more available for World-Shader-Editor

I tried to open one my files in UPBGE 4.3 and I get a warning for the World-Shader
…volume shader needs to be converted…and has to be connected to an object.
So Volume-Scatter can´t be used in the World anymore, just with Object-Shader.
I know how to set up Volumetric-Cubes, but I prefer to have the Volumetrics as
a part of the World. I am using EEVEE Render Engine.
Is there still a way of doing this or is this function gone forever?