Calling `ReactDOMServer.renderToStaticMarkup(elementWithPortal);` gets stuck in a loop while trying to do a static render.

Current behavior:
The behavior can be seen here: https://codepen.io/anon/pen/BmqWOM  by un-commenting line 58 (warning: this will make your tab freeze)

Expected behavior:
It should return with results or throw some kind of error if the input is not valid

/**
 * Copyright (c) 2013-present, Facebook, Inc.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 *
 * @flow
 */
import type {ReactElement} from 'shared/ReactElementType';
import React from 'react';
import emptyFunction from 'fbjs/lib/emptyFunction';
import emptyObject from 'fbjs/lib/emptyObject';
import hyphenateStyleName from 'fbjs/lib/hyphenateStyleName';
import invariant from 'fbjs/lib/invariant';
import memoizeStringOnly from 'fbjs/lib/memoizeStringOnly';
import warning from 'fbjs/lib/warning';
import checkPropTypes from 'prop-types/checkPropTypes';