I've noticed an nginx behavior that seems odd to me. Is this a configuration problem on my end, or something that other people have experienced?

When nginx starts the first time, the access and error logs are created with root.root ownership. When I hit nginx with the USR1 signal (which I do for log rotation purposes), the file ownership is changed to 'foo.root', where 'foo' is the user that nginx runs as.

I'm fine with that.. but it seems odd that the initial log file would not be created with the same ownership.