Well. I have a few events on a calendar that are stored in ms sql 2005 and they're loaded to the calendar on while loading the page.
So the events are on the calendar and I start to drag an event to another place, while holding the mouse button down the other events on that calendar turn invisible. They are there though, since when I drag the new event to a day that as events, that days events show up. The events stay invisible until I do a new reload from the sql server.
The online demo works fine though. This is a bit weird. I'll have to review the code a bit, but at the moment don't really know what's the problem.