I have some iClound Calendars integrated into eM Client 7.2.34711.0
I use eM Client with my agenda constantly shown and my calendar events are also shown there.
If there is a entry made to my calendar from a different client (let it be another eM Client or an iPhone or iPad), these new events do not show up automatically in the agenda. So I first have to open my Calendar tab … then I see that the events are updatet there and THEN my agenda events are also updated.
In general my iCloud Accounts (I just use CardDAV and CalDAV from that) are set to updated while sending and receiving which is set to once every minute.
This is totally annoying because it makes the agenda somewhat useless if I have to switch to the calendar view first