My party and I spent some time doing this dungeon, and ended up wiping once in the Oakheart room while trying to destroy the generators. Upon wiping we respawned at the nearest waypoint. Upon re-entering the room, all the generators were back, but were not spawning the necessary holograms needed to destroy them. We waypointed out of the room again and all died by jumping, which reset the room, but still, no spawning of holograms.
We decided to melee one of the generators down, which took about 10 minutes of constant attacking, and with 8 needing to go down, finishing the rest this way seemed ridiculous. I am not sure what may have causes this bug but I figured I would at least bring some attention to it.