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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
it('should warn about props that are no longer supported without case sensitivity (ssr)', () => {
      ReactDOMServer.renderToString(<div />);
      expect(() =>
        ReactDOMServer.renderToString(<div onfocusin={() => {}} />),
      ).toWarnDev(
        'React uses onFocus and onBlur instead of onFocusIn and onFocusOut.',
      );
      expect(() =>
        ReactDOMServer.renderToString(<div onfocusout={() => {}} />),
      ).toWarnDev(
        'React uses onFocus and onBlur instead of onFocusIn and onFocusOut.',
      );
    });
    it('gives source code refs for unknown prop warning', () => {
      expect(() =>
        ReactTestUtils.renderIntoDocument(<div class="paladin" />),
      ).toWarnDev(
        'Warning: Invalid DOM property `class`. Did you mean `className`?\n    in div (at **)',
      );
      expect(() =>
        ReactTestUtils.renderIntoDocument(<input type="text" onclick="1" />),
      ).toWarnDev(
        'Warning: Invalid event handler property `onclick`. Did you mean ' +
          '`onClick`?\n    in input (at **)',
      );
    });
    it('gives source code refs for unknown prop warning (ssr)', () => {
      expect(() =>
        ReactDOMServer.renderToString(<div class="paladin" />),
      ).toWarnDev(