Why am I not able to view my mesh emitter in the level viewport?

I made a mesh emitter in cascade. Whenever I change something particle’s appear in the level’s viewport, but only for one spawn cycle. How can I change this so they always appear?

The texture I used for the mesh’s being spawned is black, but the particle’s that appear in the viewport are tan. They are a similar texture to the default for cascade’s mesh emitter.

Thanks, Let me know what I can do.