Akali Twilght Shroud Animation [GAMEPLAY]

I recently played a frustrating game against an Akali where her twilight shroud animation would not become visible, allowing her to ambush me out of nowhere and sometimes walking straight into a slow effect that I could not see.

The effect seemed pretty easy to replicate as she willingly performed it multiple times during the game. The bug occurred mostly in lane where she would cast it out of fog of war, or possibly on the turret and even upon moving to an area where I "should" gain visibility of it, I didn't.

I believe the vision check occurs at the center of the animation which causes an effect where, for example, not being seen when placed in brush, which I'm pretty sure in intended. However I think if the center of the animation is on terrain I can never gain visibility of it.

Something to look into?