BUG? when the Steps' last title was chinese，the step component would be dither frequency

• antd version:2.7.3
• OS and its version:win8.1 专业版
• Browser and its version:chrome56

What did you do? Please provide steps to re-produce your problem.

steps里最后的step的title为中文，step便会高频抖动。

What happen?

Re-producible online demo

没有在线例子。我尝试使用codepen复现，但无法重现。也许是环境冲突导致的，不断地对本机配置进行简化，问题依然存在。本机上则可以轻易地复现出来。 附上简化的工程，npm start 后就能看到现象：

demo.zip

工程中的部分代码：

import React from 'react'
import { Steps, Button, message } from 'antd';
const Step = Steps.Step;


const statuses = [{
    alias: "First",
}, {
    alias: "Second",
}, {
    alias: "中文",
}];

class StatusShow extends React.Component {
    constructor(props) {
        super(props);
    }

    render() {
        return (
            <div>
                <Steps current={0}>
                    {statuses.map(item => <Step key={item.alias} title={item.alias}/>)}
                </Steps>

            </div>
        )
    }
}

export default StatusShow;

[garview]

It seems the cache problem though I have clear the cache many times throuh “ctrl+shift+del” . After uninstall the chrome including clear the browser data at all and install chrome again, the Steps component working fine.

[lock[bot]]

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