RelaxDirModeCheck on ControlSocket still requires group to m

Even with RelaxDirModeCheck flag on the ControlSocket tor requires the folder (containing the socket file) group to match the group of the user running tor.

Could you lift this requirement when the RelaxDirModeCheck flag is given or is there an important reason for that?

os: FreeBSD 11.2

conf:

ControlSocket /var/run/tor-instances/123/controlsocket GroupWritable RelaxDirModeCheck

log:

Before Tor can create a control socket in "/var/run/tor-instances/123/controlsocket", the directory "/var/run/tor-instances/123" needs to exist, and to be accessible only by the user and group account that is running Tor.  (On some Unix systems, anybody who can list a socket can connect to it, so Tor is being careful.)

Trac:
Username: a_p