Dragon Age: Inquisition Bug with a Tomb in the Hissing Wastes

I experienced a glitch in the tomb of the Hissing Wastes near the canyon camp in which no matter the order that I light the veils on the pillars, I do not complete the mission but instead only encounter monsters (which I have heard is a sign that your lighting did achieve the objective but functions as if it were the wrong pillar). I have heard that this has been an bug encountered in the past as well by other players. How do I resolve the glitch? Thank you!