The issue does not occur anymore after updating to DAVdroid 0.9.0.4.
Good to know, thanks for the information
After migrate to new davX version i found regression with sync birthday field in contacts.
Debug info: https://paste.centos.org/view/4ae56b2b
Can you please provide details about the problem so that we can reproduce it and have a look at it?
On my Yandex account in contacts book i have profiles with filled birthdays.
After migrate to new phone and sync with new davX version, contact profiles sync’ed,
but birthdays on phone book is empty.
With some older version (i not remember) birthdays sync successufuly.
I have just tried and found that
BDAY:--MMDDas vCard 3, which is invalid). So birthdays without year won’t be synchronized from Yandex to DAVx5.
So it seems that Yandex’ birthday handling is not very consistent. If there are any problems, please provide exact steps to reproduce and ideally a test account.