HTML5's limitations are at the hardware/browser level, not due to a lack of Sencha development prowess. This is a carefully constructed scrolling demo (which s

HTML5's limitations are at the hardware/browser level, not due to a lack of Sencha development prowess. This is a carefully constructed scrolling demo (which still shows evidence of lackluster behavior -- look at when he goes from vertical to horizontal!), which doesn't show much other than what Sencha (and any other framework) has been able to do all along.