Multiple CalDAV calendars no longer displaying

Last week's update of Calendar was a big design improvement, but it caused 2 of my 3 CalDAV calendars to stop displaying:


My calendars when viewed in the Nextcloud web interface:

All three of these calendars are from the same Nextcloud account, linked to Calendar in the same way. I have tried deleting the calendars which are not displaying and re-adding them, but no luck.

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