Vision of the Mists graphic bug
VotM has a “pulsing” effect. If you champtrain in FGS you might not see it all the time due to the high luminance.
Try the same in darker areas without looking at the light souce.
Pulsing or not, it is not what is advertise on the preview. Attach is a pic in a dark place. It doesn’t even seem to appear on the upper back until it passes through my character model.