When using the old version editor and the WISYWYG (Old Visual) editor, the only tabs that show up are Content, Sections, Design, Navigation, Preferences and Secrets. No relationships tab shows up not even for ones made a while back. I have tried to reload it and switch editors but the tab still doesn't show up.
Hey there! The Relationships tab has moved to the new interface in preparation for the new Relationships system. This change took place in order to make sure that all new relationships for the family tree are created correctly since the system has been upgraded. This is not a bug :)