Welcome to OpenStreetMap, if you are not sure about what you are seeing please don't map it into OpenStreetMap. 

What is this https://www.openstreetmap.org/way/1447788088 ? 

Don't just move ways around or add random tags to anything and upload them. Pay attention to validation warnings in JOSM before continuing to upload your changes. 

https://welcome.openstreetmap.org/ explains what OpenStreetMap is really about.