Emitter doesn’t show particles Edit: screenshot and file below
Update: torus (the emitter) particles show up just if I convert the cone (the other emitter) in the modifier tab {which automatically converts also the torus}.
.blend file

I have a sphere and I applied to it hair particle system with two emitters:

one is a cone with material, no problem at all;
the other one is a torus, which got hair particles as well. Particles show up around the torus until I change it to render as object. After that, particles disappear from the emitter, even if the torus still has them.

Anyone who knows why?
With the cone converted:

It’s cycles.
Thanks!
if you choose &quot;render as object&quot; -&gt; and choose &quot;cube&quot; as object, your hairs will be shown as that object, as cube. So it works as it should be.
Blender 2.91 result for me: