WTF Adobe?

In Photoshop, I embed a smart object (vector) inside another smart object. Given that the original object is vector, even if it is nested inside additional smart objects, you’d think I could re-size until my heart’s content. Vector is vector, and smart objects are supposed to retain the properties of their contents. Alas no, for some retarded reason, a vector smart object inside an additional smart object, behaves like a raster image.