Good question! ... Never could understand why Alibre uses user profiles in the way it does, why it's so buggy and why it never gets fixed!! Never used ANY application that has this issue, in 35+ years, never written an application that has this issue, yet it is one of the most frustrating long term bugs in Alibre.
I must be resetting my user profile every few months, but sadly, it's just become the 'norm' now!