When in areas with Fury of the Brand debuff, the screen will get thin black intersecting lines going through each other towards the right of the screen. When in Desolation and fighting the Champ Djinn, you get the same thin lines intersecting each other but are white. It seems to be the new debuffs added to the game. Turning off the HUD removes this but is obviously not a good work around.
Debuffs causing this graphical bug so far:
Fury of the Brand