CB

If autocomplete is used in a browser it's triggering in profile edit resulting in field values being lost by mistake or for example a username change when there shouldn't be a username change (e.g. moderator editing a user). All edit fields should have autocomplete="false" as no edit display should autocomplete (only registration should).

https://www.joomlapolis.com/forum/153-professional-member-support/230637-email-field-prefilled-with-unwanted-value