Greetings, all! The issue I am experiencing is that occasionally when players are dragging their tokens on a map with defined dynamic lighting barriers, they suddenly "see" out to their field of vision the entire map beyond the light borders for a moment during the movement. With Explorer Mode on, Roll20 will then "remember" a snapshot of what they have seen (unrevealed/unexplored rooms, the inside of walls, etc) for them. The only solution I can find is to toggle Update When Token Drop to be On, which fixes the issue. While this isn't a major problem, it eliminates the fun of the player experience of seeing their field of vision change in real time as they move their tokens. Settings : map with Dynamic Lighting enabled barriers fully drawn on Dynamic Lighting layer Explorer Mode On Update When Token Drop Off Dynamic Lighting Barriers Restrict Movement On