Commented out "futuristic" code

Author: Chman

PostProcessing/Runtime/PostProcessManager.cs

@@ -416,16 +416,17 @@ static void SortByPriority(List<PostProcessVolume> volumes)
 
         static bool IsVolumeRenderedByCamera(PostProcessVolume volume, Camera camera)
         {
-#if UNITY_2018_3_OR_NEWER && UNITY_EDITOR
-            // If the current camera have a custom scene then the camera is rendering that scene,
-            // otherwise the camera is rendering the scenes in the SceneManager.
-            var customScene = camera.scene;
-            return customScene.IsValid()
-                ? UnityEditor.SceneManagement.EditorSceneManager.IsGameObjectInScene(volume.gameObject, customScene)
-                : UnityEditor.SceneManagement.EditorSceneManager.IsGameObjectInMainScenes(volume.gameObject);
-#else
+            // TODO: trunk has branched to 2018.3 but nested prefabs aren't merged yet, uncomment me when they are
+//#if UNITY_2018_3_OR_NEWER && UNITY_EDITOR
+//            // If the current camera have a custom scene then the camera is rendering that scene,
+//            // otherwise the camera is rendering the scenes in the SceneManager.
+//            var customScene = camera.scene;
+//            return customScene.IsValid()
+//                ? UnityEditor.SceneManagement.EditorSceneManager.IsGameObjectInScene(volume.gameObject, customScene)
+//                : UnityEditor.SceneManagement.EditorSceneManager.IsGameObjectInMainScenes(volume.gameObject);
+//#else
             return true;
-#endif
+//#endif
         }
     }
 }