Blizzard added another hotfix after the batch initially announced. It seems the new 
Nebulous Voidcore wasn’t quite working as intended. After using a bonus roll with the new currency and getting an item, it was supposed to remove that item from the loot pool for the week. However, that wasn’t happening and players were receiving the same item they’ve already gotten on later bonus rolls. This issue has now been resolved. Blizzard will be compensating affected players, with details on that coming a little later.
With hotfixes that began rolling out a couple of hours ago and are now applicable in all instances, we’ve preliminarily addressed a bug in 12.0.5 where rolling on loot did not remove the received item from the pool for subsequent Bonus Rolls, which made it possible for players to receive the same item from a Bonus Roll.
It is now safe to roll on loot. Newly rolled items will now correctly remove the item from the bonus pool.
We’ll have more information to share tomorrow about this issue and the next steps we’re taking to remediate the situation for affected players.
Thank you very much for your feedback and understanding.
