I agree.
Indeed, report the same problem some time ago for Mass effect.
Also another little graphical problem added in the sky, during Eden Prime, and during the screen of beginning in the game.
I do not know for the moment, if this second, with packages of textures or effects, added in the game, could be solved or not, but the vanilla version suffers this problem with Vorpx in my pc today.
During dialogs, I think the problem is, because Vorpx can not differentiate, when it is in a dialog and when not. I also “solve it provisionally”
Pressing Alt-X, but it’s a bit annoying.
Ideally, try an update for Vorpx with some formula to differentiate them, or deactivate automatically when detected.
Inventory items, in some RPG games, also suffer similar problems, so we always need to resort to pressing Alt-X or move to Z-buffer mode in order to interact comfortably in them.
Probably, there is no standard formula to detect this in all games, but if there is a possibility at least for some, or the most important games, it is worth a try.