Updated Dynamic Lighting issues should go here: <a href="https://app.roll20.net/forum/post/8422745/a-new-light-bug-thread-updated-dynamic-lighting-and-fog-of-war" rel="nofollow">https://app.roll20.net/forum/post/8422745/a-new-light-bug-thread-updated-dynamic-lighting-and-fog-of-war</a> That being said, this looks like a known issue that happens when you zoom out on a page that has Explorer Mode enabled. I would highly recommend that you stick with Legacy Dynamic Lighting until it is retired.