Ciao topius
In this changeset you've added the tagless way https://www.openstreetmap.org/way/1375549660 
I've seen this happen for myself with Go Map!!, too when (mis)clicking.
I've remove the way in https://www.openstreetmap.org/changeset/173233115.
If it was 'necessary' for mapping something please add it back correctly.
Happy mapping, and greetings from Bern,
habi