Hi! I recently uploaded a map of Thundertree in my game of Lost Mine of Phandelver, but everynow and then, it disappears. The tokens are still up to date, as the images I set in the background for "visual improvement". The fog is the unchanged too. I checked with Safari, Chrome and Firefox, same results. I checked on a different computer (laptop/tower), no map.If I put a new map on, the visual improvements will disappear. Anyone know what's up?