I’m new to Niagra and I try to learn how it works.
So my problem is when i add a node to scale particule (scale mesh size or sprite size ) i can’t see them anymore.
But the particle count says that they are particles in the viewport.
Make sure before adding a “scale sprite size” or a “scale mesh size” in the particle update to add a value in the " Initialize particle "
(The reason is you can’t scale a unknow value)
For me that I also use 5.1.1.
I was able to solve it by just changing the mode in “Initialize Particle” → Sprite Attributes → Sprite Scale Mode → Set “Sprite Scale Mode” to Uniform and with that I can visualize the particles again.
And it makes sense to me since I would be using the [Scale “Sprite” size] and not the [Scale “Mesh” size].