IB_DESIGNABLE build failed when using class from within a framework

Question

I created a new embedded framework. Within the framework I created a class called "WBButton", which is a subclass of UIButton. I have set the IB_DESIGNABLE and added IBInspectable attributes to allow configuration through Interface builder, as explained here.

It works fine when I test it from within my framework (by adding a sample .xib and placing the button on the screen), but when adding the custom button to a nib located on the project which contains the framework, I get a "Build Failed" message next to the "Designables" (see below).

Also, what does "Module" mean in Interface builder?

Answer 1

Xcode 6 has a bug that breaks IB_DESIGNABLE classes defined in static library or framework. The same is with CocoaPods which use static library for all Pods.