Publishing of /stereo_*_disparity_* topics

When running the voxl-dfs-server, voxl_mpa_to_ros:

1/ creates a series of topics to publish the disparities (expected behavior): /stereo_front_disparity/left /stereo_front_disparity/right /stereo_front_disparity_scaled/left /stereo_front_disparity_scaled/right /stereo_rear_disparity/left /stereo_rear_disparity/right /stereo_rear_disparity_scaled/left /stereo_rear_disparity_scaled/right

2/ However when trying to access any of these topics in ROS, e.g. in rqt_image_view, voxl_mpa_to_ros outputs:

Stereo interface received non-stereo frame, exiting stereo

This was testing in the following configuration:

system-image: 1.4.1-M0054-14.1a-perf

kernel: #1 SMP PREEMPT Thu Oct 13 17:48:16 UTC 2022 4.19.125

hw version: M0054

voxl-suite: 0.9.5_