Bug Multi-Parent Constraint Disappearing Constrained Object

Hello,

I'm trying to create a VR upper body. I'm using the Multi-Parent constraint on the head. Problem is, when I hit play, the head disappears? I'm using Animation Rigging as well and I am making sure to align the transform of my source object. I've also hit F to try and find the body part and it just zooms into where it was before. I made the body myself in blender and used riggify to set it up. Is that maybe the problem?

Just hoping someone may have seen this problem before. Thank you for your time.