Bug on Heroic MagT

Cleared two bosses, all zoned out. Returned a few hours later and cleared the trash up to where the first boss is. Boss gone of course, but the barrrier was back up! And no crystals to kill to unlock the barrier.

Messaged a GM to confirm the bug.

Hope it gets hotfixed.
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Aggramar EU

Khaz'goroth Oceanic

Same thing happened to our group

Our Rogue kept DC'ing and so we left for a while whilst we found a replacement. When we went back in the trash was back but the first boss wasn't and the door was locked.