Es ist nicht vordringliche Aufgabe von OSM, ein bestimmtes Kartenbild zu erzeugen, sondern möglichst realitätsgetreue topographische Daten zu erfassen. Und ein Acker oder Wiese endet nunmal spätestens am Straßenrand.
Was hat denn das way/49043465 mit der Stadtmoosach zu tun. Und warum tagged man das als etwas, das es nicht ist? Etwa nur weil einem die Signatur in der gerenderten Karte gefällt?
Please do not add new highways (way/1323243005) where one already exists. Adjust the tags on existing ways instead. Do not add fake landuses to indicate track properties. Add suitable properties (mtb:scale=*) to the corresponding road section instead.
What I found were two incomplete multipolygons and two untagged ways. So much for the small error.
I didn't delete any of your work, nor did I add a single new node.
What I did was that I added the members of one multipolygon to the other. I then deleted this multipolygon because it had become superfluous. I combined one of the untagged ways with another one, which deleted it. I completed the remaining multipolygon with the remaining untagged way and added the necessary tags for the Lac Vital.
OpenStreetMap