Unity, Property Drawers & GetPropertyHeight() not working

I have big problem with GetPropertyHeight().

I want to show my input fields the way they don't overlap in the inspector but so I also can type in the input fields. The problem is, when I fix the overlapping issue I CANT type values to the input fields any more :/

So that's when I either return small value from GetPropertyHeight() function or dont use the function at all.

When I return bigger values ( like 200) the fields dont overlap anymore but they become frozen.

Here is the simple code :

 public override float GetPropertyHeight (SerializedProperty property,
                                              GUIContent label) {
         //return 16;
         return 200;
     }
 
     public override void OnGUI (Rect position, SerializedProperty property, GUIContent label)
     {
                         EditorGUIUtility.LookLikeControls();
         
                         showConfig = EditorGUI.Foldout (position, showConfig, label);
 
                             populationSize = property.FindPropertyRelative ("populationSize");
         
                             if (showConfig) 
                             {
                                 var pos_1 = new Rect (position.x, position.y + h * 1, position.width, h);
                                 var pos_2 = new Rect (position.x, position.y + h * 2, position.width, h);
                                 var pos_3 = new Rect (position.x, position.y + h * 3, position.width, h);
                                 var pos_4 = new Rect (position.x, position.y + h * 4, position.width, h);
                             
                                 EditorGUI.indentLevel = 1;
                                 EditorGUI.PropertyField (pos_1, property.FindPropertyRelative ("populationSize"));
                                 EditorGUI.PropertyField (pos_2, property.FindPropertyRelative ("specieCount"));
                                 EditorGUI.PropertyField (pos_3, property.FindPropertyRelative ("complexityThreshold"));
                                 EditorGUI.PropertyField (pos_4, property.FindPropertyRelative ("complexityRegulationStrategy"));
                                 
                         }
     }

Why is it or me so dumb ? Please Help :*