For some reason docker-compose up -d works subtly differently than docker-compose up -d -f docker-compose.yml when there are overrides files. I'm not sure why, but passing compose_file_name=[] fixes things for me locally as it doesn't build the -f list.
I think this should be the default, rather than defaulting to a specific file name.
Also, since it actually supports a list, the parameter name should be different so this is obvious