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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
beforeEach(() => {
      mountComponent = function(props) {
        const container = document.createElement('div');
        ReactDOM.render(<div {...props} />, container);
      };
    });
    it('should work error event on <source> element', () => {
      spyOnDevAndProd(console, 'log');
      const container = document.createElement('div');
      ReactDOM.render(
        <video>
          <source
            src="http:example.org/video"
            type="video/mp4"
            onError={e => console.log('onError called')}
          />
        </video>,
        container,
      );
      const errorEvent = document.createEvent('Event');
      errorEvent.initEvent('error', false, false);
      container.getElementsByTagName('source')[0].dispatchEvent(errorEvent);
      if (__DEV__) {
        expect(console.log).toHaveBeenCalledTimes(1);
        expect(console.log.calls.argsFor(0)[0]).toContain('onError called');
      }
    });
    it('should not duplicate uppercased selfclosing tags', () => {
      class Container extends React.Component {
        render() {