Hey
Just posted your shortcode into a fresh install of 2014 and the animation seems to be working fine. I’ll continue to test but seems to work fine here.
theres a good chance the animation is happening during your preloading where the page is covered with the js preloader spash screen.
with regards to its shape you can set the chart to have asymmetrical proportions by using the width, height, canvaswidth, canvasheight and relativewidth properties, check the installation tab for usage instructions.
Thanks for the great feedback, I hope this was helpful. Let me know how you get on.
Kind Regards
Paul