Ropalolyst Synovia indestructable

[(PSN)Maunstre]

Currently, the Ropalolyst boss fight is unwinnable / broken. The synovia of the Eidolon takes no damage during phase 2 / while the boss is grounded and the synovia are exposed. All damage, including void, deal 0 damage, making progress impossible. I ran this mission four times, twice in Nightmare to see if the issue was confined to Nightmare Mode, and twice regular. All four times I could not deal an ounce of damage to the synovia - nothing but a hail of grey "0"s. In the event that it matters, I was using a build using a Catchmoon (impact, radiation, viral / blast, corrosive) and two Warframes (Chroma, Limbo), which I've used against the Ropalolyst many times over since its introduction in Hostile Mergers.