From today I'm experiencing this little bug with Nova's "Antimatter Drop" skill, in a nutshell, when the sphere moves away from Nova at some point it disappears, or disappears if you shoot it, but the sphere is always there, in fact if you hit an enemy/object the sphere explodes.
It is not a serious bug but since Nova is my favorite frame I wanted to let you know 🙂 Here I uploaded a demonstration video.
Keep up the good work guys ! THANKS !!