As discussed in: Influence numeric decimal separator display format | Thinkwise Community the current behaviour of the Universal GUI is that it takes the localization settings like decimal/thousand separator and date display formatting (as well as first day of week in the date picker) from the first preferred browser language.
This is not ideal, because this way the localization settings are bound to a language while users might want to have English as their preferred language, but use their local localization settings. Therefor we would like a possibility to setup localization settings as user preference in IAM (not bound to the language setting in IAM).