Question Why does my particle not rotate properly?

I parent a particle to a empty gameobject, I then Instantiate this gameobject with the same forward direction as the player, this works properly and in most rotations everything works well.

However, for some reason at 135 rotation (and its mirror) the particle effect does not point at the forward vector as it should (the dark line is the particle in this case):




Why is this? I cannot figure it out

 

EDIT: Thot I had found solution, I did not...