fullcalendar view drag n drop

Problem/Motivation

integration with fullcalendar view drag n drop event editing is not working

Steps to reproduce

vanilla d10
install recurring events module
install fullcalendar view module
create an event instance view with 'Full Calendar Display'
by default drag n drop is checked

events show in the calendar but drag n drop is not working
noticed that classes fc-draggable and fc-resizable are not assigned to the appropriate a elements. Compared it with a fullcalendar view on a CT with date range

Trying to drag n drop you get the following error

TypeError: Cannot read properties of null (reading 'eventRange')