How to stop projectile from destroying itself?

Well, they certainly do, since they spawn right under the player. Is it how they supposed to work? Any way to turn it off?
They are debris and spawn when for example the player falls down. Then they are can be collected in a ball and be thrown.
My goal is only to stop them from randomly going through walls, as far as I know, only the Projectile Movement gives it a better collision detection in this meaning.