One of the things that has been a nuisance finally turned into a bug today.
From the image below you can see my territory (in pink) has surrounded another faction's outpost (highlighted). Since outposts that fall completely into your territory still remain the possession of their creator my units can not travel through them, but my archers are trying their hardest to follow the road that goes right through that outpost. They sit there and run and run and run. They can not even figure out a way to walk around it without me telling them how to do it.
The only in game solution is to declair war so that I can attack that single outpost to remove it from my roadway.

Here is a savegame centered on them. I have consistently been able to load the save game, click on the archers it centers on, tell them to move to the other side of the outpost they are next to, and watch them jog forever. StuckArchers.EleSav
This save game also has some issues where the "shortest" path (at least the one it chose for a road) connecting some of my cities was straight through a waistland that I had not cleared yet. I know other people have complained about roads being built through hostile territory. An uncleared/claimed waist I think should be included.
Something else to look at in this save, one of my towns is expanding into another waist. Should I be able to build my city improvements in them?When I do this with a different player our boarders shift accordingly (which is how I got this outpost stuck in my territory in the first place), but with the waists the borders seem set and you are unable to shift them by building close to or even in them.