To reproduce:

1. Open the attached project
2. Press play
3. Observe the console

Expected: animation events should not be played at all at the same frame at the moment of looping when using UnityEngine.Experimental.Director classes to create blend trees and play animations at runtime.

Actual: animation events are played in reverse order at the same frame when the animation ends and loops back to the beginning when using UnityEngine.Experimental.Director classes to play animations

Reproduced in 5.4.4f1, 5.4.5p1, 5.5.0f3, 5.5.3f1
Could not reproduce in 5.6.0f3, 2017.1.0b1 (experimental feature does not exist in this version)