I saw a couple forum posts on the wow forums about a similar issue, but no actual information. I set my gateway on immerseus HC so players can swap to the other side for add phases, but it keeps disappearing randomly. I am standing within 10 yards of the green gate, it makes no sense. One idea was that adds or puddles were damaging and killing it, but Garrosh throws desecrated weapons directly onto the gateway in his encounter, as well as spews whirl damage everywhere, yet they remain intact (obviously after heart phase i have to recast it though). Is this a known bug that anyone can offer some insight on?
Wrong.... they are unkillable again....(to my knowledge).... its an issue with view distance and how far away you are from them. its the same with garrosh, if u place them from one marker to the next, they will disappear when u go into the transition phases. so in Immerseus, place them from your stack point to as far as u can get them and try not to go out of view distance/range
its funny when blizz have stated over and over again that the gateway is oh so good and that its one of the reasons ppl bring locks and then make it close to pointless. it should stay in place until your char dies, not like this.
I'll throw the gateway down on fights and if it stays up, we can use it. However, it despawns randomly so often that we don't build our strategies around it. This is particularly true on HC Immerseus, Thok, and Garrosh. On HC Sha and HC Galakras I've never had it despawn so unsure why it does it. On Galakras it even stays up when I'm on the right-hand tower and the gateway's placed on the left ramp. Who knows!