Calling setProps() doesn't change props of children anymore

I just switched to Enzyme v3 with React v15.6 and I could notice that setProps() doesn’t change props of children anymore. Instead, it only changes props of wrapper:

Config

{
    "enzyme":"^3.1.0",
    "enzyme-adapter-react-15":"^1.0.1",
    "jest":"^21.2.1",
    "react":"^15.6.2",
    "react-dom":"^15.6.2",
    "react-test-renderer":"^15.6.2"
}

Test

import React from 'react'
import Enzyme from 'enzyme'
import Adapter from 'enzyme-adapter-react-15'

Enzyme.configure({ adapter: new Adapter() })

const Child = () => null
const Parent = props => <Child test={props.test} />

it('should update prop test', () => {
    const parent = Enzyme.mount(<Parent test="foo" />)
    const child = parent.find(Child)

    expect(parent.prop('test')).toBe('foo') // true (foo)
    expect(child.prop('test')).toBe('foo') // true (foo)

    parent.setProps({ test: 'bar' })

    expect(parent.prop('test')).toBe('bar') // true (bar)
    expect(child.prop('test')).toBe('bar') // false (foo)
})

The above test works with Enzyme v2.

[Kepro]

can you read comments before you add your comment?

[ljharb]

It is an intended change in v3 to require you to re-find elements if you want changes reflected.