Information in each entry of the drop down menus is ordered based on where the columns which the user had when they added the record/request. For all firms, this leads to highly disorganized information in drop down, and it is not wise to force everyone to use the same column layout, especially with larger firms. This seems to be an issue with user tabs.
Suggestion would be to give a firm setting to choose the order in which things populate in drop downs, or force order to be standardization in some way. Inside of any office work environment, employees must be organized, and thus this information should also be organized.