If I put the PHXFoam helper on a hidden layer, I still see the foam particles in the render (even if particle system is hidden too).
There are fewer particles when everything is hidden, but I would assume if it was working properly that no foam would be visible.
uncheck the renderable option in the object properties
I would like to have the Hide command control the visibility of foam since I configure different render passes by turning layers on and off. Can you please update Phoenix so it respects that switch?
of course we will fix it, i just suggested a temporary workaround for the problem.