When trying to edit an existing dashboard and add a filter for a user the search option does not bring the user name up as an option to add to the filter.
This is what is supposed to be seen:
Release :
Component :
The searched for user does not have any data reported in the created dashboard.
This is working as designed. For a user to be searchable in the filter option of the dashboard report, the user has to have data in the field you are filtering by.