The attribute `iconElementLeft` isn't working. The desired action is triggered just when the `<IconButton>` receives the attribute `onTouchTap`

iconElementLeft.tsx

import * as React from 'react'
import { AppBar, FontIcon, IconButton } from 'material-ui'
import {browserHistory} from 'react-router'

function _backHistory(){
        console.log('hello')
        alert('hello')
        browserHistory.push('./home')
        
    }

export default class InstructorDetails extends React.Component<{},{}>{    
    render(){
        return (
            <div className="instructorDetails">
                <AppBar
                    title="Detalhes"
                    onLeftIconButtonTouchTap={_backHistory}
                    onTitleTouchTap={_backHistory}
                    iconElementLeft={
                        <IconButton onTouchTap={_backHistory}>
                            <FontIcon className="fa fa-arrow-left"></FontIcon>
                        </IconButton>
                    }
                ></AppBar>
            </div>
        )
    }
}