[GAMEPLAY] Dreadnova Darius's passive "balls" disappearing

I very rarely play Darius, but when I did I had two interesting bugs occur that I have no idea how they happened or how to replicate them. The first one was that I killed a minion and everything seemed normal about the animation until after it's death animation. After the animation played out, I could still see my passive on the "dead model" slowly sinking into the ground (still spinning around the minion) until it went through the ground. Later on, the balls for his passive where invisible, but the orange aura around them was still there. As I rarely play Darius, I don't know if this occurs on other skins.