Hi, I discovered what is the likely cause of this. The map looks OK, editing on JOSM looks fine, but with iD inbrowser editor some phantom water area borders can be seen near Kopališče Kolezija and FGG. In josm, I see a validation error: "Incomplete multipolygon relation". If the polygon is incomplete, I bet the phantom lines are just a line from one end to the other end.

I removed the fixme, but I'm not sure what to do with the incomplete multipolygon.

Hi, true, it looks OK now. I wonder what happened, perhaps at the time of my note the rendering glitched. I'll remove the fixme, I consider the matter closed.

Ciao, grazie per questo bug report, non sapevo che esistino high res ortofoto. Ho fatto un revert di questo changeset tramite http://revert.osmz.ru . Sembra che sia già fatto, puoi verificare che sia tutto in ordine?