I know that this is intended that glow effect is made like particles but I think it shouldn't render if there's anything over it. Otherwise it looks meh. What do you think?

got it working + got instanced particle stacks to fully work, will be included in next release

Nice! Idk what instanced particle stacks are but... Will it fix #12 too maybe? Would be cool, huh

no, that's an intended feature - instanced particle emitters mean that the same item is able to have its particles rendered multiple times.

this is an issue with screen particle instancing - I still have to get to it someday