With a quick visual survey of their results, it seems this is a particular weakness of this algorithm. It appears to me that it's tending to split large cities into chunks and tie each chunk in with a huge outlying area.

Not only does that inconvenience polling places, but I think it does impose some socio-political outcome. I'm not sure whether it's good or bad, but the decision to not have cities voting as a block, and instead to include slices of them with their suburbs and outlying rural areas, certainly impacts the way representation will be determined.