Mr Papa said
its not confirmed a problem yet really… not trying to be cute, but circumstantial at the moment… you tried it with similar user… we tried it with many test users… all have worked fine… need to really see it with affected user…and you already said you cleared the auths cache on forum – tools – housekeeping… which makes sure there is no incorrect auths caching going on…
Yes, I did clear auths cache and that didn’t fix the issue.