Solid particle system SPS.dispose

Hi,

when SPS is disposed, the console gives errors :

On PG I have this error :

Quote

Uncaught TypeError: Cannot set property '0' of null
    at t.setParticles (babylon.js:25)
    at eval [as callback] (eval at compileAndRun (index.js:366), <anonymous>:101:17)
    at e.notifyObservers (babylon.js:3)
    at i.render (babylon.js:11)
    at index.js:356
    at r._renderLoop (babylon.js:4)

On my PC I have this error

Quote

Uncaught TypeError: Cannot read property 'isFacetDataEnabled' of undefined
    at t.setParticles (babylon.js?1506067662:25)
    at e.scene.registerBeforeRender [as callback] (particlesSolide.js?1506067662:237)
    at e.notifyObservers (babylon.js?1506067662:3)
    at i.render (babylon.js?1506067662:11)
    at engine.runRenderLoop (particlesSolide.js?1506067662:86)
    at r._renderLoop (babylon.js?1506067662:4)

PG:

https://www.babylonjs-playground.com/#WCDZS#59