Posts: 1,601
Thanks: 3290 in 15 Posts
20 Achievements
First pic: routing grid is there, just covered by elevated terrain
3rd pic: this happens on entirely flat, empty areas. As soon as you place lots, roads, decor the grid will be fine again. If you want a visually entirely empty island you can sink small rocks into the ground, this will work for the grid, too
4th pic: see comment 1st pic
Have you tried placing some object on them and rebuilding the routing grid? Especially in combinatin with water routing the grid sometimes behaves very weird...