This might be a reference to this one: https://github.com/facebook/react/issues/10212#issuecomment-346302374

The problem still exist.

So, trying to render with server side and got this error. I don't have this notation in my code but this might be a problem with dependencies.

```
TypeError: Cannot read property 'toLowerCase' of undefined
    at ReactDOMServerRenderer.renderDOM (/Users/lukasborawski/Dev/web-client/node_modules/react-dom/cjs/react-dom-server.node.development.js:2304:27)
...
```

```
"react": "^16.1.1",
"react-dom": "^16.2.0",
```

Thx for help.
itRenders(
        'a newline-eating tag with content not starting with \\n',
        async render => {
          const e = await render(<pre>Hello</pre>);
          expect(e.textContent).toBe('Hello');
        },
      );
      itRenders(
        'a newline-eating tag with content starting with \\n',
        async render => {
          const e = await render(<pre>{'\nHello'}</pre>);
          expect(e.textContent).toBe('\nHello');
        },
      );
      itRenders('a normal tag with content starting with \\n', async render => {
        const e = await render(<div>{'\nHello'}</div>);
        expect(e.textContent).toBe('\nHello');
      });
    });
    describe('different component implementations', function() {
      function checkFooDiv(e) {
        expect(e.childNodes.length).toBe(1);
        expectNode(e.firstChild, TEXT_NODE_TYPE, 'foo');
      }
      itRenders('stateless components', async render => {
        const StatelessComponent = () => <div>foo</div>;
        checkFooDiv(await render(<StatelessComponent />));
      });
      itRenders('ES6 class components', async render => {
        class ClassComponent extends React.Component {