I am sure this has been answered but I couldn’t find the reason why Blender seems to not update viewport changes. It works just if you move an object and you press G again or enter edit then it suddenly updates the object position. Undo doesn’t even work.
To better understand you problem, please answer these questions or check out these settings:
- Is the model rigged with armatures?
- Are there shape keys?
- Is the 3D Viewport in Solid or Rendered Mode?
- Do you have any modifiers on your model?
- Do you have any animation keyframes for the model?
If all else fails, please attach the .blend file in a reply or the main thread.