Hey all,
As you may have noticed, Patch 2.3.0b launched today, which doesn't contain any gameplay, balance, or content changes and is designed to prepare us for the future launch of Patch 2.4.0.
However, it was recently discovered that a bug that previously existed where Adria could become unable to be targeted or killed has resurfaced in this minor patch. We're actively working on a hotfix to address this issue, but we want players to be aware and we recommend avoiding Adria at this time (particularly with Hardcore characters).
We sincerely apologize for any confusion or frustration this may have caused, and appreciate your patience while we work to resolve this issue as quickly as possible.
http://us.battle.net/d3/en/forum/topic/20042885328
2.3.0b 패치를 하면 버그 때문에 아드리아가 타겟팅 불가/처치 불가가 되는 경우가 있으니 하드코어 유저들은 주의하라는 군요.