See also changeset/135322384 .
Although this did restore e.g. 11905688 as a multipolygon, other node and way edits in the area might mean that the location of the border still needs checking.

Hello,
We'll have to undo some of your changes in the area because of some of your changes have broken relations here. An example before: https://overpass-turbo.eu/s/1ubr and after https://overpass-turbo.eu/s/1ubs .
I'll revert these problematical edits so that you can continue editing with unbroken relations.
Best Regards,
Andy

Hello swordslife, and welcome to OpenStreetMap!
Please use changeset comments that explain a bit more about what you are doing than simply "new" or "change".
Any Questions, please don't hesitate to ask.
Best Regards,
Andy

Thanks - and if you think OSM has got any of the routes wrong here please let us know (or just correct them!)

Ah - so it was. I hadn't spotted that.

Looks like I got the wrong number. I'll reinstate it.

Hello,
I wonder if the foot=yes on way/744174597 should perhaps be on the adjacent footpath?
Cheers,
Andy

Hello,
I'm guessing that the service=driveway on way/1160897019 should perhaps be somewhere else?
Cheers,
Andy

Hello John,
I wonder if the surface=grass on way/888252222 was supposed to be somewhere else?
Cheers,
Andy

Hello,
I'm guessing that the surface=asphalt on way/557136501 might be supposed to be somewhere else?
Cheers,
Andy

Hello,
I'm guessing that the surface=ground on way/194193169 might have been intended for the nearby bridleway?
Cheers,
Andy

Hello,
I'm guessing that the surface=compacted on the hedge way/1161092934 might have been added by mistake?
Cheers,
Andy

Hello,
I'm guessing that the prow_ref on way/299219517 should perhaps be on the adjacent road?
Cheers,
Andy

Hello,
I'm guessing that "disused:admin_level=Ulex europeaus" on way/655452132 presumably isn't what was intended?
Cheers,
Andy

Hi Dudley,
Any idea what the "maxheight=b" on way/1004438011/history might have been intended to be?
Cheers,
Andy

Hello,
How did you verify the name here?
Best Regards,
Andy Townsend, on behalf of OSM's Data Working Group

See also changeset/135222330

See osm.org/user_blocks/7074 and links from there for more detail. Also https://community.openstreetmap.org/t/odd-edits-in-italy/97706 .

Interestingly, looking at PRoW overlay data at https://map.atownsend.org.uk/maps/map/map.html#17/51.89484/-0.55593/H/P suggests that the council might think that way/1161416279 actually is a public bridleway, although this doesn't mean that it's signed on the ground. The overlay there is at https://osm.cycle.travel/rights_of_way by @Richard from http://www.rowmaps.com/ .

Hola VBiondini y bienvenido a OpenStreetMap.
OSM es un mapa del mundo real, no es tu mapa personal para garabatear ("surface=BLA BL").
Puedes continuar editando cosas en OSM, pero por favor, solo cosas que realmente existen.
Atentamente,
Andy