An error when passing one child to a component

[futpib]

// in a `render` method
const Component = ({ children }) => r.div(children);
return r(Component, [r.span('foo')]);

console:

Warning: Invalid value for prop `$$typeof` on <div> tag.
Either remove it from the element, or pass a string or number value to keep it in the DOM.
For details, see https://fb.me/react-attribute-behavior

Warning: Prop `_owner` did not match. Server: "null" Client: "[object Object]"

Warning: Invalid attribute name: `$$typeof`

DOM:

<div type="span" props="[object Object]" _owner="[object Object]" _store="[object Object]"></div>

Changing number of children to 0 or more than 1 fixes this:

// in a `render` method
const Component = ({ children }) => r.div(children);
return r(Component, [
  r.span('foo'),
  r.span('bar'),
]);

[futpib]

If you apply this patch to tests, 4 tests will fail revealing the same exact problem.

diff --git a/test/fixtures/create-component.js b/test/fixtures/create-component.js
index c441d6c..254fb2f 100644
--- a/test/fixtures/create-component.js
+++ b/test/fixtures/create-component.js
@@ -1,7 +1,6 @@
 'use strict';
 var extend = require('xtend');
 var createReactClass = require('create-react-class');
-var DOM = require('react-dom-factories');
 
 var r = require('../../');
 
@@ -13,9 +12,7 @@ function createComponent(properties) {
       return (
         r.div([
           r.h1(this.props.title),
-          // This tests that children are passed down correctly to
-          // components that use React.DOM directly (and don't warn)
-          DOM.div(null, this.props.children)
+          r.div(this.props.children)
         ])
       );
     }

[futpib]

Wait, is this just how React works (passing single element as a children prop)? Will handling this be a worthy addition anyway?