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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
expect(el.getAttribute('spellCheck')).toBe('true');
    });
    it('stringifies the boolean false for allowed attributes', function() {
      const el = ReactTestUtils.renderIntoDocument(<div spellCheck={false} />);
      expect(el.getAttribute('spellCheck')).toBe('false');
    });
    it('stringifies implicit booleans for allowed attributes', function() {
      
      const el = ReactTestUtils.renderIntoDocument(<div spellCheck />);
      expect(el.getAttribute('spellCheck')).toBe('true');
    });
  });
  describe('Boolean attributes', function() {
    it('warns on the ambiguous string value "false"', function() {
      let el;
      expect(() => {
        el = ReactTestUtils.renderIntoDocument(<div hidden="false" />);
      }).toWarnDev(
        'Received the string `false` for the boolean attribute `hidden`. ' +
          'The browser will interpret it as a truthy value. ' +
          'Did you mean hidden={false}?',
      );
      expect(el.getAttribute('hidden')).toBe('');
    });
    it('warns on the potentially-ambiguous string value "true"', function() {
      let el;
      expect(() => {
        el = ReactTestUtils.renderIntoDocument(<div hidden="true" />);
      }).toWarnDev(
        'Received the string `true` for the boolean attribute `hidden`. ' +