Please correct me if I'm misunderstanding, but from your GIF it looks like:
Align to Center places the stroke evenly across the path on both shapes
Align to Inside moves the stroke fully inside the shape's boundary
Align to Outside pushes it fully outward beyond the shape's edge
From what I see, this seems to be working as expected. Are you noticing a difference after outlining the shapes?
Would really appreciate your clarification, so I can better understand what's not working.
Thanks!