NPCs can get stuck in a perpetual "walk/run to idle" transition animation. Particularly when starting a conversation with them while they are moving, or if something is blocking their desired path. Perhaps the best way to describe the issue is to simply link to a video of it:

https://cdn.discordapp.com/attachments/916686955427823635/1208895732329881621/animbug.mp4?ex=65e4f2e2&is=65d27de2&hm=a6f03d85dd065989ab42c08d758e5a411b069e392dc5a5eda3f699fc56a40a6a&

Details

This seems to happen because these animations lack a "rampout" value in ther .afx files. Not all of these transition animations lack them, so I simply set the ones which were missing them with the most common value I saw between the other files: 6

This value works fine with shorter animations (Sarah Morgan) and longer animations (Barrett), and fixes it in each case.

Game Version

1.9.51.0

Language

English (EN)

New Game

Yes

Reproduction Steps

Talk to an NPC while they are walking or jogging. Very good chance they will get stuck in the transition animation between moving, and standing still. It is possible this happens more above 30 FPS.