Raycast function doesn't work.

     GameObject GetObject(Vector2 pos)
     {
         Ray ray = Camera.main.ScreenPointToRay(pos);
         RaycastHit hit;
 
         if(Physics.Raycast(ray, out hit))
         {
             return hit.transform.gameObject;
         }
 
         return null;
     }

I never had problems with raycasting before. This simple method always returns null even though there's always an object at given Vector2 position. I have colliders attached to my objects, in fact I'm using raycasting in other scripts and they work just fine. So what could be the problem?

Edit : Well, I ended up using OverlapSphere instead but that used almost a quarter of my cpu since I had to call it every frame. So I'm back to simple raycast. Here's more further info

 Ray ray = new Ray(new Vector3(1,2,0), Vector3.zero);
 print(ray.ToString());
 

What I get :

 Origin : (243.4, 104, 0)...

How's that even possible?