Avatar bounds are rotated

Unity Engine
1

I’m working on a project from 5.6.0.
I have 11 humanoid Avatars and 2 of them are not behaving.

When I drag the avatar into the editor, they look fine. When I press play and the animation takes over, the bounding boxes appear rotated as if the avatar was flat on his face. The animation plays fine.

In the editor, when I manually play the animation and then stop (release the record button active state), the character now suddenly has a default pose of face on the ground. This matches the bounding box position issue, but why the heck are 2 out of 11 of my avatars face on the ground.

I did try reimporting my models with no change.

Suggestions?

2

This is odd.
Could it be related to this similar problem?

The only time I ever experienced a bounding box issue was when I was testing scaled and rigged meshes. Scale = bad with humanoid rigging. (not Unity scale value - I’m talking about external scaling)

Please update if you find a solution.