When I rerender a component with "defaultChecked" or "defaultValue" react fails to update the "value" and "checked" attribute accordingly.

Before you say "use a controlled input" I would argue that this is a bug as it basically disallows uncontrolled forms with "reset" buttons. (It will always reset to whatever the initial default value was).

spyOn(console, 'error');
      ReactDOM.render(
        <div contentEditable={true}><div /></div>,
        container
      );
      expect(console.error.argsForCall.length).toBe(1);
      expect(console.error.argsForCall[0][0]).toContain('contentEditable');
    });
    it('should validate against invalid styles', function() {
      ReactDOM.render(<div></div>, container);
      expect(function() {
        ReactDOM.render(<div style={1}></div>, container);
      }).toThrow(
        'The `style` prop expects a mapping from style properties to values, ' +
        'not a string. For example, style={{marginRight: spacing + \'em\'}} ' +
        'when using JSX.'
      );
    });
    it('should report component containing invalid styles', function() {
      var Animal = React.createClass({
        render: function() {
          return <div style={1}></div>;
        },
      });
      expect(function() {
        ReactDOM.render(<Animal/>, container);
      }).toThrow(
        'The `style` prop expects a mapping from style properties to values, ' +
        'not a string. For example, style={{marginRight: spacing + \'em\'}} ' +
        'when using JSX. This DOM node was rendered by `Animal`.'