Bug Layer Collision Matrix doesn't add new created layers

Hi all! I am using Unity 2020.3.14

I have created new sorting layers, and added to them some Gameobjects with colliders and rigidbodies. However when I go to Edit ->Project Settings -> Physics (Or Physics2D) I can not see these new layers in the Collision Matrix. So everything collides with everything when I am using OnCollisionEnter2D.

Is this a bug in Unity or there is something that I am missing? Thanks!

btw: I am saving project and scene and nothing changes. I have closed and opened the project again and nothing...,

 

Those are not what physics uses. Physics uses Layers.

Yes, it is a terribly close-sounding analog managed by the same $#@$@% window even, and I feel your pain, but to properly differentiate physics, you will need to use Layers.



If in fact you DID use Layers, be sure you have no compiler errors outstanding; that may bork the re-read process.