It was mentioned in #98 and has come up in other places as well. For some reason, colcon workspace overlays aren't correctly prioritizing in-source RMF package versions over the versions that have been installed on a machine. This usually works okay for ROS/ROS2 packages, so I have to assume there's something we can tweak in the cmake files of the RMF packages to help this work as intended.
It was mentioned in #98 and has come up in other places as well. For some reason, colcon workspace overlays aren't correctly prioritizing in-source RMF package versions over the versions that have been installed on a machine. This usually works okay for ROS/ROS2 packages, so I have to assume there's something we can tweak in the cmake files of the RMF packages to help this work as intended.