Tiles in the OccupancyGridLayer were painting pixels beyond the data from occupancy grid messages as "unknown area" (gray).
This was misleading, since it was drawing data that was not really coming in the corresponding ROS message, and it also prevented this layer to properly be used on top of other layers if the message data was smaller than the tile size (it was overlaying the layer below with gray)
Tiles in the OccupancyGridLayer were painting pixels beyond the data from occupancy grid messages as "unknown area" (gray). This was misleading, since it was drawing data that was not really coming in the corresponding ROS message, and it also prevented this layer to properly be used on top of other layers if the message data was smaller than the tile size (it was overlaying the layer below with gray)