I can see the sprite in full. I think it is a graphics card driver problem.
In the past I had an almost similar problem to this but the problem was when I turn on the webgl on the editor, the reason is that I was using a netbook Intel GMA 3600 graphics card. I believe it had limited graphics power & WebGL disabled.
In your case, it might just be a driver problem.
Can you share your graphics card info?