Displaying the UUID of an entry should reduce uncertainty when two entries "look the same" (e.g. same title, same password etc.) but are recognized as A or B only. This might happen when an entry has been re-created manually in one db version. It would make it clearer to the user why these entries are displayed as Only A/B and let the user investigate (or remember) why that might be, if it's unexpected.
Displaying the UUID of an entry should reduce uncertainty when two entries "look the same" (e.g. same title, same password etc.) but are recognized as A or B only. This might happen when an entry has been re-created manually in one db version. It would make it clearer to the user why these entries are displayed as Only A/B and let the user investigate (or remember) why that might be, if it's unexpected.