Back when this command first made it to stable if was functional for move type waypoints but was broken when trying to use a loiter type waypoint. This was when the feedback tracker was down so I reported it to Dwarden on the discord directly. In the next update the issues was fixed and all was well for people trying to use UAVs in their missions with a loiter type waypoint. I recently began work on my mod/mission again this week and noticed that sometime between now and then the command seems to have broken again, this time completely. Whether using a loiter or move type waypoint the YABON-3 UAV still adjusts altitude at random times (not as bad as flyInHeight but still periodically) rendering it pretty much useless and using UAV's for their intended function (loitering above a mission area) more or less useless.