This is not a complaint about him being lost, or stuck in a landscape feature: he is not attempting to move at all.
I have the latest game update which forces companions to follow when you change areas/fast travel, so whenever I travel he is there with me as I pass through a door or fast travel to a new location.
But he just stays exactly there until I do so again. None of the companion commands do anything to him aside from "end companion program".
Either the way I got him upgraded broke him and he's supposed to be useless now (no mention of that in the game), or the game itself has an issue [gasp!].
It's a fairly major failure to have him sitting doing nothing, although the enhanced sensors perk is still handy.
Can someone from Bethesda chime in on this? Is this a known issue and it's going to be fixed soon?
Thanks!
