remove ifdef and check for touch always

Assets/Scripts/PlaceOnPlane.cs

 
         bool TryGetTouchPosition(out Vector2 touchPosition)
         {
-    #if UNITY_EDITOR
-            if (Input.GetMouseButton(0))
+
+            if (Input.touchCount > 0)
-                var mousePosition = Input.mousePosition;
-                touchPosition = new Vector2(mousePosition.x, mousePosition.y);
+                touchPosition = Input.GetTouch(0).position;
-    #else
-            if (Input.touchCount > 0)
+            else if (Input.GetMouseButton(0))
-                touchPosition = Input.GetTouch(0).position;
+                var mousePosition = Input.mousePosition;
+                touchPosition = new Vector2(mousePosition.x, mousePosition.y);
-    #endif
 
             touchPosition = default;
             return false;
 
         ARRaycastManager m_RaycastManager;
     }
-}
+}