CalDAV doesn't show all day events [duplicate]
I am using CalDAV sync with Posteo.de. Synchronization is working so far between my Jolla, Posteo.de, my Mac and my iPad. I am using the current version of Sailfish OS.
Following problem occurs. If I create a new all-day event on my Jolla, it gets perfectly synced to Posteo.de. I can see and edit the event on my iPad. Great so far, but after another sync this all-day event disappears on my Jolla. It is still there on Posteo.de and on my iPad. Even if I edit details about the event it doesn't show up like it were hidden. Only if I make it an event with a starting and end time it is shown (after sync) on my Jolla again.
If I create such an all-day event on my iPad it is synced and shown in my Jolla, even after several syncs.
Two-day or longer lasting events are working.