One frame difference with an animation controlled by a sequence when an Anim Class is set to none

If two skeletal meshes are playing an animation at the same time and one of them has an anim class and the other does not, it appears that the animations will be slightly off from one another.

1. Download the attached project
2. Open the project
3. Play in the editor
4. Watch the mannequins in the falling loop

Result: The two mannequins are slightly out of sync with their animations (looks like it's around one frame off)
Expected: The two mannequins would be perfectly in sync