Hi. Could you identify the changeset by number for us? I assume it’ll be one on this list:
https://www.openstreetmap.org/user/Fra00/history#map=14/42.3464/13.3805
Then I, or someone else on the forum, can take care of reverting it for you, no problem. (There’s a plugin for JOSM that makes it easy; I’m not sure there’s anything for iD.)