why local costmap shadowed by something?

edit

hi, guys: i try to output two same rolling window map in two difference frames "odom" and "map" frame, by move_base.

both of them have same parameters and same layers. however local costmap looks like shadow by something.

as it showed below, local costmap is just a half of global costmap

so could anyone help me figure out why this happened?

"""" map in odom frame """"

"""" map in map frame""""

"""" map in odom frame and map in map frame """"

while, I have tried to launch the maps from separate two costmap_2d nodes, however, the problem is still there.