BAKAOLC Thank you for providing screenshots to help me understand this problem. Is body_2 an alternative body? That is, I assume that there is no problem by default, but such a problem will occur when you use body_2. I need to reproduce this issue so I can compare across the few different versions we currently have. I will contact staff for testing later.
Because I'm not sure whether it was the author who ignored it or whether it was really not updated, I listed them all together. Her model animation will conflict. If it is indeed the author who ignored this problem, then this can be ignored.
It is difficult to say whether such a matter has been resolved without contacting the author directly. Anyway, the model hasn't been updated in a long time and I don't have high hopes for it.