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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
/>
      );
    }
    const container = document.createElement('div');
    document.body.appendChild(container);
    try {
      ReactDOM.render(<OuterReactApp />, container);
      ReactDOM.render(<InnerReactApp />, outerRef.current);
      document.addEventListener('click', track('document bubble'));
      document.addEventListener('click', track('document capture'), true);
      innerRef.current.click();
      
      
      
      
      
      expect(eventOrder).toEqual([
        'document capture',
        'inner capture',
        'inner bubble',
        'outer capture',
        'outer bubble',
        'document bubble',
      ]);
    } finally {
      document.body.removeChild(container);
    }
  });
});