why deepChangeDetection option does not work in angular component of fullcalendar 5?

I am using fullcalender 5 in my angular 11 application. When Im reassign new events to calendar options, changes are not affected in view. and all of following methods for solving the problem are failed:

1- Im Setting the deepChangeDetection prop to "true".

I am using fullcalender 5 in my angular 11 application. When Im reassign new events to calendar options, changes are not affected in view. and all of following methods for solving the problem are failed:

1- Im Setting the deepChangeDetection prop to "true".

<full-calendar deepChangeDetection="true" #fullcalendar [options]="calendarOptions">

2- using callendar api render, reftech functions.

  api.render();  api.refetchEvents();

3- remove all events and recreate them