I started a fresh Nextcloud (NC21) install, and imported my ics calendar. However, the interface is not displaying the calendar events which is strange. I tried all the different views without any success. I tried to reload the page, and restart the docker containers.
When looking at the Activity panel, I can see that the calendar is being imported and that some events are created. When clicking on the events from the Activity panel, I am able to open the event in the calendar, but the same event never displays in the calendar view.
Interestingly, if I try to download the calendar I imported from the Nextcloud Calendar interface, I download an empty file.
For reference I was able to import the same calendar a week ago successfully (on a fresh Nextcloud instance, using supposedly Calendar v2.2.1 ?).