Blender IK armature rotation issue importing animation to Unity I was making some animations and discovered strange artifacts when importing certain rotations to unity. When main body rotates while IK limbs move on their own, Unity seems to not compute correctly the positions of the baked animation, so the whole body seems to vibrate, moving the limbs in a completely wrong way. I attach the difference between the two animation tests I was doing for realizing when did this issue appeared.

I attach a link to the blender animation:
https://media.giphy.com/media/f6K0jitr4erEocGDZo/giphy.gif
and a link to the animation imported to Unity:
https://media.giphy.com/media/H62Vu0MDaAWqFej4JE/giphy.gif
I think you should apply your rotation and scale, by pressing ctrl A.