[SilverShadow]

Just ran into another hiccup, was fighting a mob and he was casting a skill, as I ran behind him, Duality went off, but he finished and turned around, before Aeolian Edge could go off and the bot never cast Aeolian Edge (or any other skill) until I manually cast it. After that, it reverted to auto attack for about 5 seconds.

[8:37 p.m.]The 6th Legion vanguard readies Cermet Drill.
[8:37 p.m.]You use Gust Slash.
[8:37 p.m.]You use Duality.
[8:38 p.m.]The 6th Legion vanguard uses Cermet Drill.
[8:38 p.m.]You use Aeolian Edge.

Update:
Tried it on another mob, and if you run behind it, it'll cast Aeolian Edge and continue running fine.