Hi,
Not important, but the player character can get blocked trying to pathfind at the top of the stairs outside Foundry. I have had this happen to me many times. It has a visual tell where the character model stutters on the spot.
It isn't very predictable though. I have done the same set of actions and been fine fifteen or twenty times in a row and then suddenly got stuck. I also have gotten stuck going the other way.
I've attached an image to illustrate the problem and show the exact location it happens.