It would seem as though a great majority of enemies are unaffected by going invis, or will continue to follow you after the fact of going invis. This seems especially bad with unstoppable champions, to the point of which it is nearly comical. In lake of shadows, I had 2 unstoppable champions following me from where the third blight was, then went invis. From there, I had to go back to the first blight's location where they still followed me even though I was invis the whole time. These "things" also seem to be able to turn to exactly where the player is when using their shield blast, even if they are invis. I understand that the unstoppable champion is meant to hold down W like a crucible shotgun user, but this is a little extreme.