**Do you want to request a *feature* or report a *bug*?**
Bug

**What is the current behavior?**
I've started recieving this warning about my SVGs which is using [feGaussianBlur](https://developer.mozilla.org/en-US/docs/Web/SVG/Element/feGaussianBlur): 
`Warning: Expected server HTML to contain a matching <feGaussianBlur> in <filter>.`

**What is the expected behavior?**
Should be no warnings because there are no difference.

**Which versions of React, and which browser / OS are affected by this issue? Did this work in previous versions of React?**
Such behavior started right after updating to `React 16.0.0-rc.3` and never happened with `React 15.6.1`
}
      });
    });
    describe('carriage return and null character', () => {
      
      
      
      
      
      itRenders(
        'an element with one text child with special characters',
        async render => {
          const e = await render(<div>{'foo\rbar\r\nbaz\nqux\u0000'}</div>);
          if (render === serverRender || render === streamRender) {
            expect(e.childNodes.length).toBe(1);
            
            
            expectNode(e.childNodes[0], TEXT_NODE_TYPE, 'foo\nbar\nbaz\nqux');
          } else {
            expect(e.childNodes.length).toBe(1);
            
            
            expectNode(
              e.childNodes[0],
              TEXT_NODE_TYPE,
              'foo\rbar\r\nbaz\nqux\u0000',
            );
          }
        },
      );