Resto Shamans Restorative Mists is bugged and not healing

Resto Shamans Restorative Mists is bugged. Currently when pressing ascendance, your healing is not being distributed at all and it's just counting the initial burst of healing making them lose almost 150-200k hps on raid bosses. I'm assuming this has something to do with the ascendance model changes but it's really bad for guilds that 4 heal with any shamans.