An interesting bug....
Seems to be happening to my female human ele too, feels like a lag issue to me (Playing from Australia) and its just client side, my friend said i still looked normal when it happened to me.
Funny nevertheless.
that happens to me on my mes all the time when I use blink while running..
Has to do with lag, happens all the time for me when lagging and i drop far enough to fall face first. At least it is not as bad as when the game launched where if you moved while face planted like that it would keep re-dealing the fall dmg until you died.