Update: I upgraded from Bullseye to Bookworm (with this as a guide), and everything continued working as it should. Possible packaging problem by Raspberry Pi?
regression: can't import RPi.GPIO on RPi model B
With the trunk build, I was able to view existing events and create a new event, but I wasn't able to delete the event I had created: "ErrorInvalidOperation Meeting requests and cancellations can't be sent for calendar items located in public folders." FWIW, 5.2.0 exhibits the same behavior, so that's probably an unrelated (or at best tangential) issue. The trunk build does fix basic accessibility to the calendar, however. I might never have noticed the deletion problem as I rarely have a need to...
I've run into the same problem when bringing up a new machine. I copied settings from the old desktop to the new, but didn't notice that the old one still had DavMail 5.2.0 on it. I put 5.3.1 on the new one, but with the same settings as on the older instance, I was unable to access a public folder on our Exchange 2010 server. (Don't blame me for the server; I don't manage it. :) ) This would seem to be a regression of some sort in CalDAV handling introduced some time after 5.2.0 was released. For...
Looks like it's fixed. Thanks!
regression: all events on Exchange server show up as "canceled"