See any of the individual PRs as shown in: https://bugs.freebsd.org/bugzilla/buglist.cgi?email1=freebsd-fs&emailassigned_to1=1&emailtype1=substring&list_id=214584&product=Base%20System&product=Community&product=Documentation&product=Other&product=Ports%20%26%20Packages&product=Services&query_format=advanced&resolution=--- This is new as of a few days ago.
This is fallout from full names import from GNATS, see bug #191768 for details. I reverted freebsd-fs@ and some other @FreeBSD.org names back to empty ones. If you see more realname-related changes that shouldn't be there, please file a PR. Thanks for reporting.