Test scenario:
1. Open Contacts
2. Add a new contact filling its Name and save it
3. Edit the contact - Click on New Detail scroll button and select Birthday.
-> The default date is the today one (e.g. 26 March)
4. Click Done
Expect -> The Birthday date has been saved
Actual result -> The Birthday date has not been saved
In order to be saved, the user has to click on a different date, changing either the Month, or the Day (e.g. if today is 26 March, and you want to set this date as birthday date you have to add a New Detail as Birthday, click on the - button (changing the day from 26 to 25), click on the + button to change it from 25 to 26, then click on Done and the Birthday date will be saved).