Blizzard has shared a well-known glitch with Ouro in AQ40, and issued a caution to Hardcore players to refrain from attempting the boss. This glitch has the potential to spawn a second duplicate of the boss during the encounter, and would most likely result in the demise of all the raiders’ characters!
Known Issues (Source)
Greetings,
The list of known issues mentioned above has recently been updated with two fresh problems related to Ouro in the Temple of Ahn’Qiraj. We would like to specifically emphasize these issues here to raise awareness among groups on Hardcore realms who are planning to challenge this boss. One of these glitches has a very high probability of causing a complete raid wipeout.
- Ouro may occasionally fail to re-engage the raid after a wipe.
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Ouro may generate an extra duplicate of itself after emerging from a submerge phase.
- Developer’s Note: We strongly advise against attempting Ouro on hardcore realms until this issue is resolved, as it is highly likely to result in a complete wipeout. We hope to find a solution for this problem very soon.