SUMMARY Calendar events don't show up at all for some calendars STEPS TO REPRODUCE 1. Add a calendar that uses DavMail 2. Notice that the events are never displayed 3. Check the DavMail logs, they show it successfully retrieving them OBSERVED RESULT No events are shown from the bugged calendar EXPECTED RESULT Events should be shown from all the calendars SOFTWARE/OS VERSIONS Linux/KDE Plasma: ArchLinux KDE Plasma Version: 5.22.4 KDE Frameworks Version: 5.84.0 Qt Version: 5.15.2 ADDITIONAL INFORMATION I've had this issue with EWS calendars as well, and occasionally with a Google account, though with Google accounts removing it and re-adding it will sometimes fix it.