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**Do you want to request a *feature* or report a *bug*?**
*bug*

**What is the current behavior?**

Since React@16.5 seems that `root` element has `onclick` event handler with noop function.
In ios Safari/Chrome browsers html element has gray overlay when tap on it.

The current behavior is that the whole `root` is blinking when we tap on it.

The simple example to reproduce:
https://codesandbox.io/s/wyo8rlj1zk
The issue is reproducing only in fullscreen mode https://wyo8rlj1zk.codesandbox.io/
(root container is steel blue)

I suppose changes came from here:
https://github.com/facebook/react/pull/11927
https://github.com/facebook/react/pull/11927/files

and the issue can be related with:
https://github.com/mui-org/material-ui/issues/11154
https://github.com/facebook/react/issues/12717

**Which versions of React, and which browser / OS are affected by this issue? Did this work in previous versions of React?**
React 16.5
ios 11.3/12 Safari/Chrome
ReactTestUtils.renderIntoDocument(
          React.createElement('input', {type: 'text', autofocus: true}),
        ),
      ).toWarnDev(
        'Warning: Invalid DOM property `autofocus`. Did you mean `autoFocus`?\n    in input',
      );
    });
    it('should suggest property name if available (ssr)', () => {
      expect(() =>
        ReactDOMServer.renderToString(
          React.createElement('label', {for: 'test'}),
        ),
      ).toWarnDev(
        'Warning: Invalid DOM property `for`. Did you mean `htmlFor`?\n    in label',
      );
      expect(() =>
        ReactDOMServer.renderToString(
          React.createElement('input', {type: 'text', autofocus: true}),
        ),
      ).toWarnDev(
        'Warning: Invalid DOM property `autofocus`. Did you mean `autoFocus`?\n    in input',
      );
    });
  });
  describe('whitespace', () => {
    it('renders innerHTML and preserves whitespace', () => {
      const container = document.createElement('div');
      const html = '\n  \t  <span>  \n  testContent  \t  </span>  \n  \t';
      const elem = <div dangerouslySetInnerHTML={{__html: html}} />;
      ReactDOM.render(elem, container);