According to the wiki page for the TeleopPanel plugin, "but it could show things in the 3D scene" but there is nothing obvious/semi-obvious in the source to how this plugin could be adapted to render in the 3D scene. I have tried digging through the API/documentation but can't find anything helpful that
I do assume that this comment means to draw in the "main" 3D scene in rviz, not some other 3D scene. If not can you clarify?