I have reported a few issues concerning hunters using the in game bug report system but I wanted to check in here as well in case others have a better understanding of whats going on or causing the issues.
1. On pull pet runs to boss due to aoe damage and gets hit; putting pets on passive seems to resolve this. Is this a tank issue? (we have a Fire mage or dps dk pull the boss)
2. During transitions, pet seems to either get jibbed by boss or just dies when you reach the other platform (this can happen with demonic gateway as well.
EDIT: General consensus here for these two issues seems to be that this is a normal boss mechanic as the boss attacked the first attacker on any platform and pet management is required; use petattack macros with pet on passive, or switch pet stances appropriately. Using cower/snake trap can also help reduce pet damage taken.
3. There is a chance on phase 2 transition for the pet to get locked out of the encounter; its alive yet it cannot reach boss and cannot be dismissed. Ruins the damage output. (I play BM, but its bad for any spec). This has happened once only, but ofc, its possible for other to experience the same issue.
UPDATE:I have been told by a fellow hunter that if you mash assist/passive stance repeatedly and quickly, the pet can get back to the boss in p2; I have had no opportunity to check this (whenever the bug reappears) but any confirmation would be helpful.
EDIT:Confirmed by Hikashuri below. (post#14)
Any tips for pet management for this fight are welcome.
EDIT: Thanks to all posters here for all the suggestions mentioned so far.