The sim2sim problem

<img width="1277" height="745" alt="Image" src="https://github.com/user-attachments/assets/48ef1dc3-4dd7-41cc-abe6-c76c2393c81d" />

I ran the initial ONNX strategy of the G1 robot in Mujoco, but found that the robot couldn't stand still and was twisting its limbs on the floor. Why did this happen?