So this is a sample of how to enable the splitter
So once you start getting crazy with the content IN the splitter you'll notice (on page load) all the content in a tiny box on your screen then *BAM* kendo takes over and you have splitters. This is because the html is downloaded and shown, styles applied, then the javascript runs usually in my case in document.ready. So this happens pretty fast, but sometimes you'll get a bit of lag where you will see the page being re-organized (especially full-screen implementations)
Quick fix though
So the same idea applys everywhere really...this example is just with the splitter. If you're seeing content "Pop", just hide it until Kendo has finished Kendoing :)