Mass Center gizmo is on the floor, when it should be close to the hips position.

see attached images.

repro:
- import attached motion file or any fbx humanoid motion file
- select "Jog" motion
- open animation previewer > Animation tab
- look at the center of mass gizmo in the animation previewer...
bug: gizmo is on the floor plane.
expected: gizmo should be close to the hips position.

This bug is only present in Version 2017.3

not repro in 2017.2 & 2018.1