Mesh space additive animation issue with pelvis

Development Character & Animation
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1

Hey, here is a video of the problem (all animations in the blendSpace are mesh space additive):


The first PreviewBasePose is the base pose used by the additive animations, the second have the pelvis slightly rotated on Z axis.

Using the second pose, I don’t understand why the pelvis is moving on the X axis even if the additive animation only moves it on the Y axis.
It seems that the pelvis is moving in local space… Maybe I missed something?

2

I managed to solve it using “ResetRootTransform” before applying mesh space additive, it looks like the second preview base pose had a rotated root.