Brief bug summary: Certain items in the Yu Garden Black Market are unavailable for purchase.
More details: The "Black Market Merchant Liuyi" in Yu Garden, Shanghai has a rotating stock of items that is normally available in her shop, with each channel having a different assortment of items. However, after searching every channel for the last week, it is clear that some of the Yu Garden items have been permanently removed. The items that are unavailable are Golden Pearl Shadow (eye accessory), Golden Flower Shoulder (shoulder), Golden Flower (pocket), and Golden Flower Badge (badge).
This is a imgur album of the the Liuyi shops from channel 1-20 in Aurora on 5/25/20 and how the 4 listed items are not available.
Steps to reproduce:
1) Enter the Yu Garden map between the times of PDT: 11am-7pm, EDT: 2pm-10pm, UTC: 6pm-2am.
2) Talk to "Liuyi" to open her shop
3) Repeat in all other channels
Character name: FruitPieCake
Character level: 220
Character job: F/P mage
World name: Aurora (but testing in Reboot gave same results)
Date and time of the incident: 5/25/20 5:12 EST (but the shop has been bugged for years)