It seems the user Pantida has been making strange edits around the place, including “houses” that don’t actually exist.
https://www.openstreetmap.org/user/Pantida/history
There seems to be another two who have started at the same place and time with low quality edits.
https://www.openstreetmap.org/user/KOREENOR
https://www.openstreetmap.org/user/vickythantt
I already contacted Pantida but did not receive a reply, I would delete her work but before I do I thought I’d reach out and ask first.