User blog comment:Ninja17199/Gem Restore Bug/@comment-26947994-20160729011055

If you check the News tab in the home screen, there is a summary of what the maintenance has brought. In addition, a few bugs are listed there that have popped up, one of which is this exact same bug you're talking about.

Don't worry, gumi will have it fixed... soon? Hopefully it will be faster than the time it took them to fix the Karna Masta Mildran bug.