Size.RENDER && Content Div

When you set the size mode `Size.RENDER` and place textual content into the `Node` using `Node.setContent`, the size of the nested content div is not updated with the render size.

Will try to work up an example tomorrow. I was doing something dumb when I encoutered this (trying to set a max height on a `Size.RENDER` so that `text-overflow` works, should just set an absolute height), so I don't know how critical this is or if folks will run into this for real...