InputNumber设置了formatter和parser导致了placeholder属性失效

[HuYuee]

• I have searched the issues of this repository and believe that this is not a duplicate.

Version

undefined

Environment

chrome浏览器版本69.0.3497.81

Reproduction link

Steps to reproduce

InputNumber控件在设置了formatter和parser属性之后placeholder参数失效

What is expected?

希望placeholder参数能有效

What is actually happening?

placeholder参数失效

[zombieJ]

https://codesandbox.io/s/p9p489790m

[ant-design-bot]

Hello @HuYuee, we use GitHub issues to trace bugs or discuss plans of Ant Design. So, please don't ask usage questions here. You can try to ask questions on Stack Overflow or Segment Fault, then apply tag antd and react to your question.

你好 @HuYuee，Ant Design Issue 板块是用于 bug 反馈与需求讨论的地方。请勿询问如何使用的问题，你可以试着在 Stack Overflow 或者 Segment Fault 中提问（记得添加 antd 和 react 标签哦~）。