Projectile not bouncing on collision

Hello ,

I am making a kind of a ball. I have added projectile movement component to it and have used the proper collision channel on it and the object with which I want the ball to collide. I have set bounciness to one.
Initially I set the ball’s physics linear velocity towards the object but the ball looses velocity on collision.
I am using Paper2D sprites.
How do I make the ball not loose velocity on collision?