Doing the Hearts and Minds battle against Mordremoth after stopping the blighted versions of Rytlock and Majory the blighted version of Braham appears and when the reality shift appears at this point its hovering off the side of the map over the bottomless pit. If it helps my main is also Sylvari so this bug occured with a Sylvari main during the boss fight with choosing both Caithe and Canach to join for the fight inside the Dragons mind.
More or less the Reality Shift feature is floating over a pit and cant be reached.