I wasn't sure whether or not to post this to the bug section or the how do I section but for now I will assume that I must have it set up wrong.
I have a player sprite with 8-direction control and on pressing the spacebar, a bullet is spawned and moves at the angle of the player (please see capx file). However, when moving North-West (so whilst the up and left arrow keys are pressed) the bullet will not spawn. The bullet spawns for all other 45 degree directions and I experience this problem over all of the games I have made so far.
Capx file: https://dl.dropboxusercontent.com/u/204115655/Example.capx