Assetbundles with custom shaders

Hello, here we got a problem with assetbundles using custom shaders again. "Again" means there have been already too many discussions on this topic before, among Unity Forums and Unity Answers. Here is my problem:

(1) I have put all my custom shaders into Resources folder;

(2) I build a bundle for custom shaders before anything else gets built, with proper dependencies. While running, the shader bundle is always loaded first, and then others, following a exact same way as described in Unity's Manual.

(3) While running, all objects are rendered with a error apperance, but in the inspector, meterial、texture and shader are all set properly. As following:

So, what should i do with this? to write a script reassigning shaders to all object's in my game?