The two white shapes are virtually the same but on different layers in picture 1. I don't know why I'm getting these jagged edges on one of them. I've already toggled 'quality and sampling' but it doesn't fix it. I tought it was just a preview issue but they end up being rendered like this.
It happens in another comp also, but in footage's borther (picture 2).
I'm using after effects CC 2017