DRG life of the dragon bug

HI, early in DT I noticed a bug within The Omega Protocol Ultimate regarding Dragoon's lotd buff. during phase 2 specifically it seemed that under certain circumstances the buff would not properly apply granting 3 stacks of nastrond only usable by the designated nastrond button and not geirskogul as well as stardiver being completely unusable and as far as I can tell the damage buff was not applied. It is my theory that it has to do with the invulnerable status of one of the omega bosses but im not really sure. I thought it would have been fixed by now but I heard recently it is still occuring. Is this a common problem in other instances and does anyone know the specific cause of it?