Bug report

Required Info:

• Operating System:
  • Ubuntu 20.04
• ROS2 Version:
  • Foxy
• Version or commit hash: foxy-devel
  • foxy-devel branch
• DDS implementation:
  • Fast-RTPS

Steps to reproduce issue

Run the multi-robot example

ros2 launch nav2_bringup multi_tb3_simulation_launch.py

Expected behavior

Nav2 stack works and local and global costmaps get updated just like in the single robot example.

Actual behavior

For both robots, the nav stack works, but the local and global costmaps are not being published.

Additional information