
Realm: Valdrakken
Character (name, faction, level...): Talfor, alliance, 70
Difficult mode of the instance in which you found this issue: Any
Complete description of your issue (do not forget to specify the issue, all conditions for making the issue to happen, and if the issue is related to a phase, specify the phase in which you found this issue): Spine of Deathwing as well as Madness of Deathwing encounters are not doable. On spine, the mobs (tentacles + almagation) disappear shortly after you engage in combat and never respawn once you kill them / let them disappear. Madness of Deathwing is not reachable, but it's very probable it wouldn't start / wouldn't be doable as well if you managed to beat spine. I saw some recent fixes of legacy content, so I hoped this one could also be fixed, as it's never worked properly. If the encounters are hard to script, maybe you could just put kill credits (for each plate on spine, or the entire encounter, and then for madness of deathwing) for them? Cheers.
Steps for reproducing the issue: Kill all the bosses to reach spine of deathwing.