"Oh good, you found it! Now, for the next piece I've heard a rumor that Carl has it. I have no idea how it got all the way over there but if you pop in for a visit I'm sure you'll be able to find it."

I haven't put the map together for the Omen Islands, and she hasn't tried sending me to Carl before. When did this start?

Not a bug. It's to encourage the users to buy and complete the Uncharted map to unlock the islands.

It was changed in May

Oh, haha, apparently I haven't been going to Shinwa much.

Thanks for answering! :)