Issue reported on forum https://wildfiregames.com/forum/index.php?/topic/27254-no-fire-particles-for-carthaginian-ballista-if-stone-is-flying-or-after-landing/
Reproduced by me on svn, but looks like hard to reproduce because @Stan was not able to.
Cartaginian ballista ought to have flaming projectile flying, but because that projectile definition in ballista crew, visual sometimes mess things up.
Also it has nothing to do there.
Removing also similar problem from unused operator file.
Introduced in rP20483