Its a small thing… but when mutants (especially Dux for some reason) are following in sneak mode …they can get caught between the ladder and the wall in some maps… and are neither able to wiggle out or climb up nor down. In particular it has happened twice in the House of Bones map… on the ladder facing the location where with we have to rescue wazzisname…
Thank you for bringing this to our attention 
I’ve forwarded this to the dev team. Please let me know if teleporting out of the map, or saving and reloading, takes care of this issue?