Just did another Aurostor fight where the sharding went ballistic. We started the fight, blowing our cooldowns of course. Then after a minute or so it decided nah, new shard, new boss! Awesome. Then after about 10 seconds fighting this new one, we got pushed to yet another shard. Or at least, some of us did! Not everyone in the group came through the wormhole together.
This is absolutely absurd, blizzard.