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.