Mac works! It really does. Like any software Mac has its own annoyances. One strong point for buying Mac is how well bundled softwares are integrate and with iDevices. Sometimes this can lead to annoyances caused by system wide settings or settings changed by different application.
I love to keep things organized. Took a lot of pain organizing my GMail's address book. Mac's address book did a good job of syncing with GMail contacts including birthday's. Untill one day when no longer I could edit or add year field for birthday's. Crazy!! New contacts end up with default year '2000' reminding of Y2K. All of new contacts got younger making me look old.
Googling led to a discussion with one suggesting to delete address book preferences. Tried and nothing worked. Next stop is Apple support. Initial support person I guess was going by pre-written instructions - clearing preferences & caches. Nothing worked. One thing got confirmed, issue has something to do with my user account. She couldn't help and had to call a senior support engineer but had a solid 10-15 min wait time providing me some time to debug on my own. I hate when tech supports give me instructions like I'm using computer for the first time!! It's their product anyways!!
Recollecting what I had changed that would have caused the issue, stumbled across date preference which I did customize few weeks back. Short date format wasn't much different from long date format. Looked odd to me, so customized short date to include only month & day. As I said earlier Apple's software are well-integrated, address book is using short date format while editing but displays them in long date format. Inconsistency, definitely a bug in my eye.
Pics as it happened,
Sad original discussion on this is archived, I can't add the solution to it.