[DRG]

We found it is repeatable with that Batloc in the map generator when urbanization is set to >0 and REALLY shows up when urbanization is set to >5

What you found was a combination of factors that have been in the game for years but it's an unusual combination to appear and why it's taken this long to be reported

Urbanization 5 is when the game drops square grids of city with the pavement and a map has a high lakes number and thats what Batloc 168 does to create the linked waterways. When a city grid is dropped on top of that they do not play well together and the houses in water issue appear when urbanization is <5 as well just not so much

That Batloc was not designed to have roads and houses but it still should not be happening and it's on the list to investigate for whenever we look at the code again.