Sloped Minifig Leg 3817b is wrong

[Max Martin Richter]

I checked the Minifig by placing it between a brick construction.
As far as I can tell the head stud is indeed slightly off, when the figure is placed in a completely straight position. If you try to bring the figure inline with the brick construction the torso and head will be slighlty bent forward (Maybe one or two degrees). The head stud still matches with the brick system to the play of construction.
Unfortunately I can't find my caliper for now and will come up with same measures, when I found it.

I did some more research on the legs.
Indeed the pivot point is centered in the round top area but its off compared to stud system while the hip is fully symmetrical.
   
   

Another fact: it is not possible to bring the hip in a straight position, while it is build next to a wall: