And yes this is a problem. I find many posts about this with no real solution.
So I fought with this for a long time, trying to figure out how my settlement is bridging anything. I was not getting footfall all that time because I have roads? Why on Earth would you break a settlement because it has roads? People make roads! People spend plots on the roads so how are they not part of the settlement??? I use my cubits to make roads so make them part of my settlement. That was so frustrating. I did like the map tool on the debug menu, I would have never known if that wasn’t there but that doesn’t make the issue go away. I had to spend 10 additional plots next to my roads to fix my settlement but my ash farm that required the road is not part of the settlement, because you don’t count roads as settlement. If that’s the case quit making me spend plots on roads.
Please fix this and please add a “Join Settlement” button so people have a choice to join or not instead of getting absorbed when you do/don’t want to be.