When using Chrome, appointments seems to get some offset problems after using the browser scrollbars. This makes moving and resizing appointments impossible after a while.
It can be achieved in your demo (http://demos.telerik.com/aspnet-ajax/scheduler/examples/outlook2007/defaultcs.aspx
1. Scroll as far down you can, with the browser scrollbar, on this page without losing the "Product planning"-appointment out of sight.
2. Move the "Product planning"-appointment to 4pm.
3. Scroll all the way up again.
4. Try to move or resize any appointment in the demo.
This is tested with the latest version of Chrome.