It's an issue with the VIEW of the database. The Database is OK. All the records show up as BLANK, and the Element column shows up as a row #.
It appears both Filtering and Sorting the Documentation View have this behavior.
After sorting or filtering, the editor is still "active", so double clicking and editing the Nickname in row #2 will modify whatever record is supposed to be in row #2. So just keep it in the default view/sort when editing from the Documentation Editor grid (Add dialog and Element Browser work fine also).
I think I have a fix - gotta test it some more. Will let you know once we figure it out.
For now, just close the filter or close the view and re-open the view and you will see your record values - just don't Sort or Filter.