I'm still confused by the description in the manual. So from what I have interpreted, the chamfered side of the clip should be facing the thrust bearing or sprocket that it's retaining. If that is the correct interpretation, then unfortunately mine was installed correctly!
I can't tell by looking which way around the clip goes - I go by feel. To me, the chamfered egde feels smooth and rounded while the square face feels quite sharp by comparison. On the broken clip the face with all the spline indentations feels like it was the square face.