incomplete sidewalks-mapped-as-separate-ways around here are messing up pedestrian routing.  It's perfectly legal (its necessary, actually, in order to travel more than a block) to cross at virtually every corner in California but most crosswalks have not been mapped, so routing apps are giving errors or nonsensical routes.  There are also sidewalks on both sides of these streets, but misleadingly only one has been mapped for some reason.  There are also a number of other pedestrian paths that have been drawn but not connected to the streets properly.

It might make sense to convert most of these sidewalks to sidewalk=both/left/right tags on the streets, which is less prone to messing things up when not done absolutely perfectly.