React autofocus issue

autoFocus attribute is lost if React DOM is not attached to document at time of rendering.

HTML

<script src="https://cdnjs.cloudflare.com/ajax/libs/babel-core/5.8.24/browser.js"></script>
<script src="https://fb.me/react-with-addons-15.2.0.js"></script>
<script src="https://fb.me/react-dom-15.2.0.js"></script>
<script src="https://facebook.github.io/react/js/jsfiddle-integration-babel.js"></script>

Babel + JSX

function Test() {
	return ( 
		<div>
			<button>No autoFocus</button> 
			<button autoFocus>autoFocus</button> 
		</div>
	);
}

var container = document.createElement('div');

// autoFocus works if you attach first:
// document.body.appendChild(container);

ReactDOM.render(<Test/>, container);

// autoFocus doesn't work if you attach after render:
document.body.appendChild(container);