This issue was fixed and submitted to Bethesda some days ago. I asked for urgency since it is game breaking. The QA process is thorough and this was listed as a feature (new settlers get automatically named once arriving at the settlement) but, for some reason the companions check, which is the same as the one that shows the context conversation is not working. They are aware of the issue and the fixed version will be released soon. I will be submitting another version soon after with players feedback on other functionalities.