When the interval is set to 15 mint (Event
OnResizeStart) and the slot interval is set to 1 I'm not able to resize the appointment to 23:59 to 00:00 on the next day but if I set the slot interval to 4 then the feature work fine.
I'm using the Scheduler demo code.
Working with Time Line View Day
Just I added the fallowing lines
<ScheduleEvents TValue="AppointmentData" OnResizeStart="OnResizeStart"></ScheduleEvents>
public void OnResizeStart(ResizeEventArgs<AppointmentData> args)
{
args.Interval = 15;
}