With Kendo Scheduler in Day or Week view, moving some all day events causes "Uncaught TypeError: Cannot read property 'startOffset' of null".
Steps to reproduce:
1. Almost any Kendo demo. For example: http://demos.telerik.com/kendo-ui/scheduler/move-resize
2. In week view, move two events to "all day events" for the same day.
3. Refresh the page. With demo this occurs only after refresh as the events must come from API as all day events for the same day.
4. Start dragging the lower all day event..
This causes "Uncaught TypeError: Cannot read property 'startOffset' of null". Reason is that Kendo cannot find a slot for event. This is because the all day slot height is too low to cover more than one event (only reaches the top all day events).