rolling window global costmap borders are marked as obstacles

edit

Hi,

i am trying to get a rolling window global costmap. I know that this is highly uncommon, but in my usecase it would be extremely beneficial if the global costmap wouldn't keep anything for ever. (This is for a robot on Street Loop with potential obstacles). As you can see in the picture the border of the global costmap gets marked as an obstacle and isn't removed by the next update. https://imgur.com/g2p3106 It gets only partly removed once cost values of the local map are close to the previous borders of the global one.

I tried setting allways send full cost map to true but that didn't change anything

I would be extremely grateful for any help or tips, thanks in advance Tristan

The config file of the global costmap is as follows:

global_costmap:
   map_type: costmap
   global_frame: map

   robot_base_frame: base_footprint
   update_frequency: 5.0
   publish_frequency: 5.0

   static_map: false
   rolling_window: true
   always_send_full_costmap: true

   width: 10.0
   height: 10.0

      - {name: obstacle_layer,    type: "costmap_2d::ObstacleLayer"}
      - {name: inflation_layer, type: "costmap_2d::InflationLayer"}