Bad news: OrganisorFeed not working on latest release.

I used to have " OrganiserFeed" to display up-coming calendar events on feed screen which is supposed to be native funactionality with OS but not. After update to 50-2 this morning I notice that the app not working any more. Installation went well but there are things missing in setting page where to select available calendars. I guess this "calendar" thing must be changed then app cannot use the source as before.