Game engines typically spawn character model entities with this pose by default. Which means if you see this then the NPC's scripted loop hasn't even been initiated at this point. This can be a bug obviously but it could also be due to performance since a lot of game engine pipelines are async and some of these tasks might not have been completed in time.

It's not exactly an easy problem to solve (simulating crowds in a huge city without any organic view distance portals) but I guess they could have also saved themselves a lot of pain by not targeting legacy systems or maybe make less ambitious claims about their game.