Particles Don't Use Velocity "In World Space" Properly

The particle system has its initial velocity and its velocity/life in world space. It is expected that the particle's orientation won't influence the particle's velocity. That isn't the case though as rotating the emitter clearly changes the direction of the particles. It isn't always consistent with each axis either. Meaning as you rotate the system the particle's direction don't seem to match at a 1:1 ratio.

Updated

1. Open the attached project
2. Select the particle system 'space'
3. Enter 180 into the Y axis rotation

Original

1. open attached project
2. Select the particle system in the scene and enter 90 into the Y axis rotation

RESULT
The particles will shoot downward then begin to fly upwards.

EXPECTED
The particles shoot upward and begin to fly downward.