Adding an "All day event" into Calendar in Outlook works fine. And the
event appears at the top of the calendar view.

However, if a second "All day event" is created, for the same day, it's
added, but is not visible at the top of the view. It is still there, and
will appear if the space, where it should be, is clicked on.

Adding a third "All day event" is also fine, and makes the second one
appear as well.

All-in-all, it's fine to have one or three all-day-event, but it's not
ok to have two.

Any ideas?

Thanks,