Solid particle system with lines

i want to create a solid particle system where the particles are lines, however they don’t seem to render.
I have created simple playground example: Babylon.js Playground (switch to version 4.0.3)
I have added spheres too and they render correctly.
Any idea what is happening? Are line meshes special? Thanks


Pinging @jerome who is the father of the SPS

The SPS can only manage 3D objects (at least planes), not lines.
The closest feature lookint like the SPS for lines is the LineSystem : Create Parametric Shapes - Babylon.js Documentation