Fullcalendar drag exception

[Anders Kobberup]

I have a problem using the wrapped fullcalendar, and wonder if anyone else have the same problem, and if so a solution/workaround for the problem.

I have set a DragAndResizeConfig on my calendar, and it works brilliantly the first time a drag an event - the event snaps the the defined slots and i get the update when i drop the event. However when i begin to drag a second event, it does not snap to the slots and the log starts filling with exceptions and when i drop the event, the view is cleared of any events and i have to reload the page..

This is the event that is shown in the console:

 Uncaught TypeError: t.start.clone is not a function
    at Y (<anonymous>:6:23956)
    at P (<anonymous>:6:23557)
    at Re.z [as isEventRangeAllowed] (<anonymous>:6:23130)
    at constructor.cellOver (<anonymous>:7:16108)
    at constructor.trigger (<anonymous>:7:1971)
    at constructor.cellOver (<anonymous>:7:4655)
    at constructor.dragStart (<anonymous>:7:4358)
    at constructor.startDrag (<anonymous>:7:994)
    at constructor.mousemove (<anonymous>:7:841)
    at HTMLDocument.<anonymous> (<anonymous>:6:5532)