Thats what you get from using a mixamo model with the unreal anims, mixamos auto rigger places the bones to far back on the sholders, you need to skin your model in a 3d program.
Thats what you get from using a mixamo model with the unreal anims, mixamos auto rigger places the bones to far back on the sholders, you need to skin your model in a 3d program.