Came in to say this but it also extends to the Bhaalite cultists who turn invisible as well. For whatever reason, despite the fact that my Tav has an always-on See Invisible, even walking by them doesn't reveal them. I don't know why Larian implemented it this way, but it's a real feel-bad moment when I do everything I can to participate in stated counterplay that then doesn't work, despite the description of either spell stating that it allows for a Dex save to keep from being seen.
