Hey @User-3fdd4275c7!
So your legs are physically below the pelvis, yes. However, the bone hierarchy means EVERYTHING but “root” on most models are below the pelvis- that’s what it means, not physically below. So that includes arms, head, etc.
What the real issue possibly is could be linked to whether you have an upper-body and lower-body separation for animations. If the Lower-body area is weighted more heavily than the reaction animation, it’s going to use more of the “Idle” or “Running” animation.
Hope that helps! 