Vnode class data isn't applied recursively #3365
Description
Vue.js version
2.0.0-beta.5
Reproduction Link
https://jsfiddle.net/Lv4vpote/2/
Steps to reproduce
I have a nested component structure, where all the components defined on the root and rendered within it's context. Each component gradually applies additional logic and classes to the first child without creating new node.
What is Expected?
The deepest component should have following classes: componentClass1, componentClass2, componentClass3, staticClass
What is actually happening?
The deepest component has only componentClass1, componentClass2 classes