Fireworks bug / Fireworks disappear (or explode) quicker the more fireworks there are

Fireworks disappear (or explode) quicker the more fireworks there are. Let's say I let off a firework and it takes 3 seconds for the exploding animation to complete. If I wire 10 dispensers ejecting lots of fireworks simultaneously, the fireworks will explode but will disappear A LOT quicker (in like 1 second).