First of all, why there's "wait" action after spawn?
Second, what behavior do you use for icicle_bullet's movement?
Most probably, right after spawning, you'd want to set the object's angle to 90 as objects spawn turned in the right direction by default, so if you want it to go down, the angle is 90 (up = -90, left = 180, rotating clockwise).
Hope that helps.