Bug: Steps.Step not working

[promise96319]

Demo

<Steps current={1}>
  <Steps.Step title="first" />
  <Steps.Step title="second" />
  <Steps.Step title="third" />
</Steps>

Background

This demo in official docs is not working. The source code in steps.tsx not parse children props, but uses items: StepsProps[] to render children. Steps.Step doesn't work at all.