Using 18.104.22.168 and looking at a2o_treadMill_getIn_x animation but it happens with any animation that snaps the Sims position. During this animation the Sim takes a step forward. Once they get too far away from the origin they snap back into it and continue the animation. If you export one of these animations, create an override, and import the blend file the in-game Sim will glitch and jump back and forth for a couple frames. I'm not sure if it's a problem with the animation export, import, or loading clip/header data into the warehouse.
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