CAS - Contains New Item (Lost Legacies)

Hi all!

Obviously, we've all encountered 'contains new item' glitches--do event rewards usually stay for longer?

The dress that was part of the 'Lost Legacies' event has a gold border around it, and my 'long dresses' category says 'contains new item'. I redownloaded every pack and am 100% certain that it's this dress that's causing it. Is anybody else's game permanently marking it as 'new'?