I've been reviewing the issue, but I'm still struggling to understand the behavior. Please note that there is currently an
experimental feature that allows visibility of non-unique attribute values, but I don’t think that’s relevant in this case.
I noticed several warnings in the LDM when I am in Edit mode. Are you aware of these warnings?
Also, do you intend to use the attribute LGA NAME as the primary key? Have you tried disabling it?