I am using the latest NRP with Ubuntu 18 and Gazebo 9.8 in docker.
In a custom gazebo model plugin I use
ignition::msgs::Marker to visualize rays. Unfortunately, the lines are not displayed in the web interface, but I have tested it inside the NRP backend docker container by simply running the model plugin in standalone gazebo (version 9.8.0.hbp.2.3.0) and there my visualization works fine (as well as any other gazebo>9)
Has anyone had this problem? Any hints of where to look to fix this?