Issue with particle System using Mesh has Renderer Using Unity 2018.4.23f1

Hi all!
I hope that I'm in the proper section of the forum, but I have encountered an issue recently and I can't seem to find the solution.. I tryied to look online for what possibly could cause that, maybe I don't know the proper therm for that bug, but I couldn't find anything related.

Here's a short video of how the bug looks like :
https://gyazo.com/b738e8c606d6cb2222923d9c34ec8662

And here are the components of my GO's particle system and material:





Any idea whats causing this issue?

Thanks to you all!