Is this an import? It created lot of disconnected and overlapped highway.

https://www.openstreetmap.org/way/1285918059/history
This highway is not connected and overlaps a building

https://www.openstreetmap.org/way/1285918748
This is a track inside an airport, it overlaps an already mapped aeroway=taxiway

https://www.openstreetmap.org/node/11928191666/history
https://www.openstreetmap.org/node/11928192000/history
these nodes are tagless and share the same coordinates, other tagless nodes where added

https://www.openstreetmap.org/way/1285918779/history
this way is just weird, it has a "M" shape, it overlaps already mapped highway and is not connected to anything

https://www.openstreetmap.org/way/1285918680
this residential partially overlaps a railway

ecc.ecc. 