Screenshot:
https://steamuserimages-a.akamaihd.net/ugc/914672441106649161/276AD80645E1C0530E964ACFAB47B65232DFFB8C/?interpolation=lanczos-none&output-format=jpeg&output-quality=95&fit=inside%7C2048%3A1152&composite-to=*,*%7C2048%3A1152&background-color=black
I have no idea what caused this but it was happening A LOT, basically upon every zone in to anywhere it seems like the pathing zones weren't calculated correctly or it used the wrong zone's pathing and it was different per party member! Sometimes just one character had ****ed up pathing other times it was more.
Sadly the mouse cursor was not visible on the screenshots I took so you can't see the red not walkable cursor between the characters on the two which are missing legs, selecting one of the other characters makes it walkable without issues. I'm pretty sure you could literally get stuck in a zone with this because usually you cannot reach the area exits.
Solution:
-Saving and reloading did not work, so it's shared between game states.
-Exiting and reloading the game finally fixed it after I had had gotten pissed off at exiting and entering each zone 5+ times to get correct pathing.
Recreate:
-No idea, I spent a lot of time with the steam overlay up and restarted the game with a new character 2-3 times without fully exiting it.