Fullcalendar showing all events under plus events

I don't know whether it is a bug or some misconfiguration at my end, my fullcalendar shows all events in popup and not a single event in the box. And this is happening inconsistently like not for all the events.

enter image description here

I tried to put this limit but this does not work for me:

header: {
    left: 'prev,next today',
    center: 'title',
    right: 'month,agendaWeek,agendaDay'
},
events: '../../../../fullcale.ashx',
editable: true,
droppable: true, // this allows things to be dropped onto the calendar !!!
eventLimit: true, // allow "more" link when too many events            
views: {
    agenda: {
        eventLimit: 2 // adjust to 6 only for agendaWeek/agendaDay
    }
},