The dbus-x11 packages' /etc/profile.d/ssh-x-forwarding.csh file will start a new dbus-deamon that gets killed when the user disconnects from ssh causing problems on re-connect.
I've reported the issue with a fix here: https://bugzilla.redhat.com/show_bug.cgi?id=2223420
Thankfully it seems the the dbus-x11 package dropped these scripts in later releases.
-- Orion Poplawski IT Systems Manager 720-772-5637 NWRA, Boulder/CoRA Office FAX: 303-415-9702 3380 Mitchell Lane orion@nwra.com Boulder, CO 80301 https://www.nwra.com/