I made a misc item that is placed on medic left shoulder. I compiled manually with blender SMD tools and my QC, while in ref pose (and some others) everything is fine, jigglebones working etc, but when I play animation, model "sinks" a bit and even changing orientation in some animations. (same behavior is in import tool)
Model has 3 jigglebones and is bound to bip_spine3 and weight mapped.
Position, scale & rotation applied to model and armature
Any ideas what did I miss?