I am creating a 2D game and I set all the sprites material shader to sprites/diffuse to allow lights to affect the sprites. This works perfectly fine, however it seems setting a sprite to sprites/diffuse is affecting my particle systems and causing them to not be visible anymore.
Here is a screenshot of the game when the background image is currently set to sprites/default:
And here is a screenshot of the game where the background image is set to sprites/diffuse:
As you can see the particle system (spacecraft thruster) is not visible in the second screenshot where nothing has changed (the z values and sorting layers are the same), apart from changing the background image sprite to sprites/diffuse instead of sprites/default.
Does anyone know how I can keep the background as sprites/diffuse and get my particle system to be visible?
(I am using the following particle system rather than the shuriken one: