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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
}).toWarnDev(
        'Received `false` for a non-boolean attribute `whatever`.\n\n' +
          'If you want to write it to the DOM, pass a string instead: ' +
          'whatever="false" or whatever={value.toString()}.\n\n' +
          'If you used to conditionally omit it with whatever={condition && value}, ' +
          'pass whatever={condition ? value : undefined} instead.',
      );
      expect(el.querySelector('font-face').hasAttribute('whatever')).toBe(
        false,
      );
    });
  });
  
  
  describe('Custom elements', () => {
    it('does not strip unknown boolean attributes', () => {
      const container = document.createElement('div');
      ReactDOM.render(<some-custom-element foo={true} />, container);
      const node = container.firstChild;
      expect(node.getAttribute('foo')).toBe('true');
      ReactDOM.render(<some-custom-element foo={false} />, container);
      expect(node.getAttribute('foo')).toBe('false');
      ReactDOM.render(<some-custom-element />, container);
      expect(node.hasAttribute('foo')).toBe(false);
      ReactDOM.render(<some-custom-element foo={true} />, container);
      expect(node.hasAttribute('foo')).toBe(true);
    });
    it('does not strip the on* attributes', () => {
      const container = document.createElement('div');
      ReactDOM.render(<some-custom-element onx="bar" />, container);