Custom editor makes inspector view act weirdly.

Hello,

I've created a script that ended up making my inspector view looking from the right way to a really weird way (pics bellow) :

Before

After

Needless to say I don't want this behavior. Where did I screw up so badly ?

Here is my custom Script code

 [CustomEditor(typeof(GameObject))]
 public class AutoSnapObject : Editor {
 
     
     
     void OnSceneGUI()
     {
         
         if (Event.current.type == EventType.KeyDown && Event.current.character=='p')
         {
             
             RaycastHit hit;
             
             GameObject go = ((SnapTarget)GameObject.FindObjectOfType(typeof(SnapTarget))).gameObject;
             if (go==null)
             {
                 Debug.Log("no snap target found");
                 return;
             }
             if (go==target)
             {
                 Debug.Log("currently selected object is the snap target");
                 return;
             }
                 
             
         
             Collider coll = go.GetComponent<Collider>();
             if (coll==null)
             {
                 Debug.Log("no collider detected at the snap target");
                 return;
             }
             GameObject targetObject = (GameObject) target;
             if (targetObject==null)
             {
                 Debug.Log("invalid cast");
                 return;
             }
             Vector3 normalizedDir = coll.transform.position-targetObject.transform.position;            
             if (normalizedDir.magnitude <0.04f)
                 return;
             
             normalizedDir=Vector3.Normalize(normalizedDir);
             
             coll.Raycast(new Ray(targetObject.transform.position,normalizedDir),out hit,Mathf.Infinity);
             
             targetObject.transform.position=hit.point + hit.normal*0.03f;
             targetObject.transform.rotation = Quaternion.FromToRotation(Vector3.up, hit.normal);
             
     
     
             Event.current.Use();
         }        
         
     }
     
 }