Duplicate contact storages I use Android 2.3.4 (Gingerbread).

When I go to Contacts > [MENU] > Display options, I see duplicate entries as "bud***@gmail.com Phone-only (unsynced)". (1) See left image.

And when I try to add a new contact, I face the same issue. (2) See right image.



Why does this happen? This wasn't there earlier and I noticed this right now. I didn't visit contacts app recently though. I noticed this when I tried to add a new contact.

Adding more to the issue, I can create new contacts and save them inside one of these places, but it'll always display in the bottom duplicate. Even if I select the top duplicate when saving, it'll only display in the bottom one.
The weird problem had a weird solution. I turned the phone off and turned it on again, and the problem was gone.

I can't give any reason as to why the problem occurred and why it got solved. Might be a bug.