Just found its related to this:
I thought I’d giving it a shot with automations. You can copy the space:
The issue is when the “lookup” relation is empty, its still an editable field that is not linked to anything. Solved it by automatically creating the lookup relation, but this might cause duplicates depending on where the data is, and where it is being inputted. Depends on workflow this part can be adjusted.
Its less neat than an “editable” switch, but if its a problem you need solving right now, here’s a way you can copy.
Note: this bypasses permissions. They will be editing entities they do not have access to edit, through the “editable look up”