Google turns off maps nav search history if you turn off web search history. Maps could easily switch to local to the device instead, since you usually nav with the same device over and over and could rebuild common history if you got a new device (or transfer history), but it feels like they want a carrot and stick.
Well the google PM said that before this change all their apps history were unified, and they just split off the workspace apps. But maybe you're right and the only reason it's still that way rather than split up is a business decision rather than a developmental/resource allocation decision.
