Bored and curious friend here. The CS duplication occurs after a character's inventory has hit a capacity of 200 items. Every item added thereafter will be duplicated. For instance, if I have 300 items in my Cash inventory, 100 of them will be duplicated, for a total of 400 items. This goes undetected by the gifting system, so you can still gift yourself items until you hit the actual inventory cap. Anybody with a CS capacity over 624 items will be considered to have "maxed" their inventory, and will be unable to purchase items directly.[Addendum #2] Credit to my bored and curious friend it seems like the item "duplication" problem exists for CS that have around 250 items. The first few rows of items do not duplicate. The rows vary depending on each CS and the amount of items they have but is probably proportional to the amount of items in the CS.Definitely proportional. My friend has near cap items in her CS and it's around 80% that gets duplicated.
Are there any plans for extensions of sales for affected players/ any extension at all? My friend missed out on the cube sales this weekend because of the glitch.