B8 2D sprite shader differences / other issues?

Well our custom shaders have gone tits up with b8. The built in sprite shader acts fine though, so I would like to know what changes in detail happened with this build if possible please. It's hard to tell what is intended or not.

 

Sure - https://www.assetstore.unity3d.com/en/#!/content/38682

 

That's odd, there's issues here. So perhaps it's not strictly related to that. I'll try and get a repro going. Thanks for checking this out. It's just weird since it works perfectly fine when I don't use it.