Blender 2.8 viewport updates

I was wandering about smoke simulation, at the moment it doesn’t work at all I think, but it used to work for a bit in Blender 2.8 and EEVEE, and the visualisation used the same type of tech than the “volume world” I guess (tell me if I am wrong here). And when I see the previs of smoke sim in Blender 2.79, it is pretty good, is their a reason why we can’t have the same type with EEVEE ?