There is a new uproar on the forums, this time from Hunters -- petitions, titles in all caps, threads being moderated, etc. What are they all upset about? It seems an important item was left off of the Patch 2.3 notes:
- Fixed a bug in which Hunters were able to disengage from combat using Feign Death during boss encounters.
The Hunters are upset because they were not just using Feign Death to drop aggro during boss fights, they were also restoring mana by drinking.
It has been suggested that this was actually nerfed because not only could you drink during a boss fight, you could also change gear. Nethaera agrees that this functionality was not intended, but still maintains this is a bug fix and not a nerf.