We noticed when using the Editor Widget in Experience Builder with Related Table records, that once a user has accessed the related record, there is no easy way to navigate 'back' to the Parent record. Instead, the users report they are clicking 'discard edits', which clears any previous map and table selections.
Ideally, ExB and the Editor Widget would be more 'stateful', especially since users may often need to review two or three related records for the same feature.