I’ve seen a tiny bit but relevant discussion related to the visual bug that occurs when building boroughs or rural towns. It seems that it occurs when you relaunch the game these towns/boroughs will revert to their ancient era models or not progress at all which look atrocious but most importantly out of place next to the renaissance era and up city centers. The only other sprawling mod I have is city sprawl which only effects districts, nonetheless I've tried disabling it and nothing changes.