Unable to change the y component of dummy bot's facing direction?

I’ve created a mode where I spawn some dummy bots and I set their facing direction to (0,-1,0), but they seem to not be able to face downward. I’ve tried tweaking all the values, and the x and z directions are all affecting the facing direction, but changing the y value seems to not be doing anything. Is this a bug or am I doing something wrong?

I don’t think players are capable of looking completely downwards, try adding a small X or Y component to the facing direction.

For a quick fix, you could set the first point of Direction Towards(Start,End)
to Eye Position(Event Player) and the end point to be Position Of(Event Player)
since normal Position Of gets the point of ground contact.

I believe looking straight down will set your Vertical Facing Angle Of(Event Player) to be around 80.