Slot in children not sync right

[carrytao]

Vue.js version

2.0.0-beta.5

Reproduction Link

http://jsbin.com/jehoxayuyo/1/edit?html,js,output

Steps to reproduce

type in the input. In vue 2.0, it doesn't show the input value. And if you switch to Vue 1.x, edit the html's head, it shows the input value.

What is Expected?

show the input value.

What is actually happening?

In Vue 2.0, it doesn't show the input value.

[yyx990803]

fixed in b5b963f and related commits.