Found another bug (from a feature that we actually use a lot): I created a serial event “Every tuesday at 7am” and then moved 4th of April (single event) and 18th of april (and all following events) to 10am. After that, the debug view doesn’t show the serial event anymore (tested with my test-account that @Ali has access to) . Also when I create a serial event in general, it only removes the first appearence from the bookings-calender, but not the following repeated events.

The CalDAV revamp PR is due to be merged this week, and actually fixes the recurring event's subsequent events not being picked up. As for the first issue mentioned, I'd have to check as I don't think I have faced such an issue just yet. I'll keep digging and sort it out, if it isn't already sorted in the PR 🙌

Okay. I will wait till then and start testing then more intensively.