I've configured the summary list to show the upcoming birthdays in the next 31 days as part of the "Summary" view under Special dates. However, for some contacts the birthdays are not shown there. In particular, I have a contact who has a birthday in 12 days - the birthday is shown correctly in the Addressbook entry for that contact. There are birthdays in the summary list from the same addressbook, both including earlier and later dates, but this one contact's birthday is missing in the list. There may be other contacts whose birthdays are not shown - I don't know.

Reproducible: Always

Steps to Reproduce:
1. Open Kontact and look at the summary view.

Actual Results:  
The birthdays list in the "Special dates" section is incomplete.

Expected Results:  
It should show all the birthdays that happen in the interval specified in the corresponding configuration section.

Oddly enough, the birthday does show up in the list of upcoming events of the Kontact summary view. (I don't know why that list shows birthdays at all, they are not "Events" in my calendar.) That's how I can see that the birthday in question is missing on the Special dates summary.